Mobile apps rarely fail at launch. They fail when they scale, break, or stop delivering value to users. ***That is where the real work begins*** I work with startups and businesses to build mobile applications that are not just launched, but are stable, scalable, and built to perform under real user demand. From idea to App Store and Google Play, the focus stays on reliability, speed, and long-term usability. Over the past 10+ years, I have delivered 50+ mobile apps across iOS and Android, covering everything from early-stage MVPs to production-scale platforms used by growing user bases. 🔹Technology Stack: - Mobile Apps: React Native, iOS (Swift, SwiftUI), Android (Kotlin, Java), Flutter - AI/ML: ChatGPT, GPT-4o, Claude, RAG, NLP - Backend: Node.js, Python, Firebase, REST APIs - Cloud & Database: AWS, Google Cloud, MySQL, MongoDB - UI/UX Design: Figma, Adobe XD Important Note: All discussed ideas and project details are protected under a strict NDA. 🏆𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀: - 10+ Years of Experience in mobile app development - 50+ Successful App Launches on App Store & Google Play - Fluent English & Client-Verified Communication Skills - 𝐂𝐥𝐢𝐞𝐧𝐭-𝐅𝐢𝐫𝐬𝐭 Philosophy: Quality, Satisfaction & Long-Term Partnerships 🌐 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐲 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞:- 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐬: Dating Apps | Taxi Booking | Food Delivery | Health & Fitness | Education | E-commerce | Social Chat Apps | Music | Restaurant Apps 🔹𝐒𝐤𝐢𝐥𝐥𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞:- - AI & Chatbots: ChatGPT, OpenAI, AI-powered real-time chat - Backend & APIs: Node.js, Python, Firebase, REST API integration - Payments & Subscriptions: PayPal, Stripe, Razorpay, Google Pay, Apple Pay, In-App Purchases - Real-time & Media: Chat, Audio/Video Calls, Live Streaming - Location Services: Google Maps, Real-time Tracking, Geolocation - App Deployment: App Store & Play Store - AI and Chatbot Development: AI-powered chat, ChatGPT, OpenAI, Gemini, Deepseek, Replit, n8n 🔹𝐂𝐎𝐍𝐒𝐔𝐋𝐓𝐀𝐓𝐈𝐎𝐍 – • The best technology stack • App architecture & scalability strategies • Cost & timeline estimates tailored to your needs • Solutions for API integration, UI/UX, real-time features, and more Message me now to schedule a consultation! #MobileAppDeveloper #MobileAppDevelopment #AppDevelopment #iOSAppDevelopment #AndroidAppDevelopment #NativeAppDevelopment #CrossPlatformDevelopment #Flutter #ReactNative #Swift #Kotlin #Java #SwiftUI #AndroidSDK #Dart #APIIntegration #RESTAPIs #BackendDevelopment #Firebase #NodeJS #CloudServices #UIUXDesign #PushNotifications #RealTimeChat #InAppPurchases #PaymentGatewayIntegration #LocationServices #AppStoreDeployment #PlayStoreDeployment #AppOptimization #PerformanceTuning #AIIntegration #ChatGPTAPI #MachineLearningMobile #ARMobileApps #EcommerceApp #SocialAppDevelopment #FinTechMobile #HealthTechApp #OnDemandApps

🧩🌍7 years as a Shopify developer expert, certified by Shopify - I've built everything from standard or custom Shopify stores to public Shopify apps and Shopify headless storefronts, and there's always a way to make it work. My Shopify web developer achievements: - launched 79 Shopify websites for fashion, lifestyle, supplement, entertainment brands - they earn around $155M+ yearly based on my work. As a Shopify developer, I built 35+ themes with expertise converting Figma and HTML website design to Shopify. Every project focuses on and includes comprehensive Shopify SEO, conversion rate optimization, and Klaviyo integrations to maximize growth. - as a Shopify developer skilled in Shopify app development, built 46 Shopify public apps for the Shopify app store and 20 Shopify custom apps for internal customer needs, for example a custom configurator app. I am a Shopify app developer who delivered 30+ apps with a "Built for Shopify" badge. Ready to be the React developer for your next Shopify public app or Shopify custom app. - 55 Shopify theme customization projects for Shopify 2.0 themes using Liquid, HTML, CSS, and JavaScript. As a full stack developer, I heavily focus on improving design and Shopify speed with a proven ability to customize a modern OS 2.0 theme using Liquid developer skills for your Shopify store. - assisted 46 clients in boosting sales via conversion rate optimization and mobile-first approach. As a Shopify developer, I eliminate bugs and gaps holding your Shopify website or Shopify store back. As a web developer I provide design refinement + implementation to seamlessly optimize both desktop and mobile UX for growth, with affiliate marketing apps integrations for better UX. - 30 migrations made: Woocommerce to Shopify migration; Shopware to Shopify migration; Magento to Shopify migration or other CMS to Shopify migration. I’ve handled collections, customer, order and other data migrations with protecting existing Shopify SEO rankings which is always critical for Shopify management. As your Shopify developer expert, I always ensure the transition is invisible to your customers but transformative for your workflow. - with more than 100 Shopify development and Shopify app development audits under my belt, where I specialize in turning underperforming stores around to boost Shopify speed and Core Web Vitals metrics, I delivered $10M+ in incremental revenue across my last 20 client engagements. I always achieve improvements for my clients through enhancing Shopify SEO, applying strong Liquid, HTML, CSS, and JavaScript skills to clean the code and avoid relying on third-party apps that slow down site speed. My Shopify developer skills: 🟢 Shopify developer seo marketing - I set up shopify site for beauty and fashion, luxury, wellness, supplement, jewelry, lifestyle, other brands 🟢 Shopify OS 2.0 theme customization beyond template limitations - huge experience with themes like Dawn, Impulse, Focal, Impact, Be Yours and 35 more 🟢 Shopify app developer - strong understanding of JavaScript, React Router v7, TypeScript, Prisma, Polaris, Remix.js, Python shopify 🟢 Shopify developer building custom headless storefronts using Hydrogen and Oxygen with seamless headless CMS integration. 🟢 Shopify developer CRO & Shopify designer specializing in landing page builder solutions to accelerate growth for e-commerce using GemPages / Replo. 🟢 Shopify app development with focus on Shopify Admin API, Shopify API integration, webhooks (HMAC verification, idempotency), OAuth install flow experience as well as Theme App Extensions / App Embed Blocks 🟢 Translating Figma, HTML or Adobe PSD designs into a polished, high-converting Shopify store and storefronts 🟢 Shopify Plus development, with significant checkout customization for B2B companies and brands 🟢 Shopify Plus developer - custom Shopify app development, Shopify Functions, Shopify customer account extensibility and API integration experience 🟢 Deep experience in theme customizations using Liquid, HTML, CSS, and JavaScript skills 🟢 Custom theme development and Shopify UX improvements based on Figma designs 🟢 Homepage, Product Page, supporting pages optimization and refinement for better Shopify marketing - theme customization as well - not an industrial designer 🟢 Shopify website configuration expert - subscription management, Klaviyo email marketing, Judge.me, Loox review apps, Shopify dropshipping setup, payment integration and checkout, quiz apps (Octane AI, Shop Quiz), Google Analytics 4, Meta Pixel & Conversion API, inventory management, kajabi. Shopify developer, Shopify web development, Shopify developer cro for 10x boost, speed optimization, Shopify SEO, checkout customization, and Shopify 2.0 sections and blocks. With Wordpress shopify developer background, I handle end-to-end Shopify migrations including WooCommerce to Shopify migration (not fintech / odoo) Please DM me or send an invite and we'll take it from there!

I help startups, founders, and businesses turn ideas into scalable mobile applications that users actually love to use. Over the last 7+ years, I have developed and launched mobile applications for startups, SaaS companies, IoT products, and growing businesses using React Native, Flutter, Node.js, AI integrations, and cloud technologies. 🎯Top 5% in app design & development on Upwork 🎯 100% Job Success (Client Satisfaction Ratio) 🎯Helped companies reduce operational time by up to 50% 🎯Rewarded as 🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 🏆 by Upwork Unlike developers who simply write code, I focus on building products that are: ✅ Launch-ready ✅ Scalable from day one ✅ Designed for growth ✅ Optimized for performance ✅ Built with long-term maintainability in mind What I Can Help You Build 📱 Custom Mobile Applications • React Native Apps • Flutter Apps • Native iOS & Android Apps • Cross-Platform Applications 🤖 AI-Powered Applications • ChatGPT Integrations • AI Chatbots • Recommendation Engines • AI Content Generation • NLP-Based Features 🌐 Startup MVP Development • Product Architecture • Rapid MVP Development • SaaS Mobile Applications • Marketplace Platforms • Subscription-Based Apps 💳 Payment & Subscription Systems • Stripe • PayPal • Apple Pay • Google Pay • In-App Purchases • Subscription Management 📡 IoT & BLE Applications • Smart Device Integration • Bluetooth Low Energy (BLE) • Wearables • Real-Time Monitoring • Sensor-Based Applications ☁ Backend & Cloud Infrastructure • Node.js • Express.js • MongoDB • PostgreSQL • Firebase • AWS • REST APIs • GraphQL Why Clients Hire Me ✔ Clear communication throughout the project ✔ Product-focused approach ✔ Clean and maintainable code ✔ Fast turnaround without sacrificing quality ✔ Reliable project delivery ✔ Long-term support after launch 💚 Let’s connect and turn your app idea into a reality! React Native | Flutter | iOS Development | Android Development | Mobile App Development | Cross-Platform Development | Hybrid App Development | Native App Development | Expo | FlutterFlow | JavaScript | TypeScript | React.js | Node.js | Full Stack Development | AI Integration | ChatGPT API | OpenAI API | Machine Learning | NLP | Chatbot Development | IoT | BLE | Bluetooth Low Energy | Payment Gateway Integration | Stripe | PayPal | Google Pay | Apple Pay | Firebase | AWS | App Store Optimization | App Store Deployment | Play Store Deployment | Push Notifications | REST API | GraphQL | Redux | Zustand | Next.js | MongoDB | PostgreSQL | MySQL | UI/UX Implementation | Dashboard Development | Admin Panel Development | Testing | Performance Optimization | API Integration | MVP Development | SaaS Development #MobileAppDevelopment #ReactNative #Flutter #iOSAppDevelopment #AndroidAppDevelopment #CrossPlatformApps #AIIntegration #Firebase #StripeIntegration #PayPalIntegration #AppStoreRelease #PlayStoreRelease #UXDesign #MVPDevelopment #IoTIntegration #BLEApps #Chatbots #OpenAI #TensorFlowLite #TopRatedFreelancer #CI_CD #DevOps #Docker #PushNotifications #RealTimeApps #CustomMobileApps

Hey! I'm Mykyta, a mobile app developer, React Native specialist, and full-stack engineer with 10+ years of experience and 32 successfully released apps. My core specialty is end-to-end mobile app development and building high-performance applications as a dedicated ios android developer for wellness, startups, and SaaS businesses. I've hit "App of the Day" on the App Store, helped a startup secure $750k, scaled products to 100K+ active users, and delivered 30%+ growth in user retention. That's a proven track record. 🏄 React Native & Cross-Platform Expertise As a battle-tested mobile app developer, I build cross-platform applications that feel truly native. For comprehensive mobile app development, whether you're comparing React Native vs Flutter or need an expert perspective to make the right choice, I help you select the exact stack that fits your business goals, timeline, and budget. As a versatile ios android developer, I ship apps across both ecosystems using React Native, Expo, TypeScript, and JavaScript, managing the pipeline from architecture to final App Store deployment. Every professional mobile app developer knows that seamless integration requires deep platform knowledge and clean memory management — that is exactly what I bring to the table. 💻 Full Stack & End-to-End Product Ownership I own the entire product lifecycle, providing full-cycle mobile app development from web dashboards to final deployment. When you hire an all-in-one ios android developer, you get native-level client performance backed by a scalable infrastructure: Mobile: React Native, Expo, TypeScript, JavaScript, Redux, GraphQL, Reanimated, Lottie. Backend & Cloud: Node.js, Nest.js, AWS (S3, EC2), Firebase, Supabase, PostgreSQL, MongoDB. APIs & DevOps: Stripe, PayPal, Segment, Appsflyer, Sentry, CI/CD pipelines, Docker, GitHub Actions. As a React/Next.js developer, I complement every mobile product with robust web frontends. Working as your trusted mobile app developer, I ensure you get one reliable partner for the full stack. 🤖 AI Features & MVP Launch AI is no longer optional. I build intelligent mobile features — custom LLM integrations, smart AI recommendation engines, and predictive UX. Having an expert in AI-native mobile app development on your team is a massive competitive advantage. As an innovative ios android developer, I blend AI with mobile performance seamlessly. I've built MVPs from zero to App Store deployment as a skilled ios android developer dozens of times. My optimized mobile app development process focuses on agile execution, rock-solid security, award-winning UI/UX, and long-term post-launch support from a reliable mobile app developer. I focus heavily on business metrics, helping founders achieve at least a 42% ROI on their mobile investment. 🎯 My Collaboration & Communication Philosophy A great app requires more than just clean code; it demands absolute transparency and alignment. I do not operate in a vacuum. When we work together, you get clear asynchronous updates, structured Slack or Microsoft Teams communication, and weekly video syncs with measurable milestones. I deeply understand business priorities, constraints, and the critical importance of keeping deadlines, making our partnership stress-free and highly predictable from day one. ⚙️ Scalable Architecture & Clean Code Approach Production-ready apps require careful planning. I focus on creating clean, modular, and maintainable codebases using cutting-edge design patterns. This means your application will be ready for rapid feature additions, team scaling, and heavy traffic loads without requiring a complete rewrite in six months. I prevent technical debt early by implementing strict TypeScript typing, optimized component re-rendering, and robust offline data caching mechanisms right from the start. ⚙️ Who I Work With I'm a great fit if you're looking for an experienced ios android developer to build: A React Native cross-platform app for iOS & Android with complex business logic. A SaaS mobile product with a Node.js, AWS, or Firebase infrastructure. An AI-powered mobile experience designed by a top-tier mobile app developer. A wellness or health tech application (deep niche domain experience). 📱 Core Summary of Expertise ✔️ Mobile App Development: From wireframes to 100K+ active users and global scaling. ✔️ Mobile App Developer: Specialist in React Native, Expo, and performance optimization. ✔️ iOS Android Developer: Full-stack integration with Node.js, AWS, Firebase, and Supabase. ✔️ Web & AI Development: Next.js architecture, REST/GraphQL APIs, and LLM integration. ✔️ App Store Deployment: 32 successful apps shipped, approved, and actively maintained. Let's build something that matters. Drop me a message with your project details! Key Words: Flutter Developer | Mobile App Development | React Native Developer | Web App Development | Python Developer | Wordpress | iOS Developer | Android Developer | Mobile App Designer

I specialize in building robust, end-to-end VPN ecosystems — from cross-platform applications to powerful admin panels and secure backend infrastructures. With years of hands-on experience across multiple VPN protocols and deployment environments, I deliver secure, scalable, and high-performance VPN solutions tailored to your exact business needs. 🛡️ Supported VPN Protocols: ✅ WireGuard – Lightning-fast, modern VPN protocol. ✅ OpenVPN – Battle-tested and widely compatible. ✅ IKEv2/IPSec – Ideal for mobile security and fast reconnects. ✅ OpenConnect / AnyConnect – Cisco-compatible enterprise-grade tunneling. ✅ Shadowsocks – Lightweight proxy for bypassing censorship. ✅ V2Ray / VLESS / VMess – Next-gen obfuscation and tunneling protocols. ✅ Trojan – TLS-based protocol for strong anti-censorship. 📱 Cross-Platform VPN Application Development: ✅ iOS (Swift / Objective-C) ✅ Android (Kotlin / Java / Flutter) ✅ Apple TV & Smart TVs ✅ macOS, Windows, Linux (native or hybrid) ✅ Browser Extensions (Chrome, Firefox, Edge) Premium Features Include: 🔒 Kill Switch 🔀 Split Tunneling 🧹 Ad & Malware Blockers 🌐 Custom DNS 💸 In-App Purchases (Stripe, Google, Apple) 📱 TV Login via QR Code 🔁 Auto Protocol Switching 🧠 Advanced Admin Panel & Backend Infrastructure: Designed with ISPs, VPN providers, and enterprise clients in mind, my Laravel-based admin panels include: 📊 Smart Dashboard: Real-time user activity, traffic stats, server status, and alerts. 👥 Client Management: Create, suspend, edit users; ticket support; manage devices. 🧾 Bulk Account Creation: Generate voucher/gift card accounts instantly. 🧑‍🤝‍🧑 Group & Subscription Control: Manage plans and group-level privileges. 🌍 Server Control: Add/manage VPN servers, view resource usage (CPU/RAM/BW). ⚖️ Load Balancing: Automatic traffic distribution for 99.99% uptime. 🛑 Downtime Alerts: Receive instant alerts via Slack, email, or SMS. 🔒 Decentralized Auth System: Keeps users connected even during API outages. 📈 Real-Time Monitoring: Accurate online user count & server performance tracking. 💳 Secure Payment Gateway Integrations: ✅ Stripe, PayPal – Seamless subscriptions and one-time payments. ✅ Crypto Payments – CoinGate, CoinPayments integration for privacy-focused users. Whether you're launching a white-label VPN service, need a corporate-grade internal VPN, or want a fully branded cross-platform app — I can deliver a secure, user-friendly, and feature-rich solution tailored just for you. 🛠️ Let’s build your VPN empire — with zero compromises on speed, privacy, or performance.

🏆 Top Rated Flutter Developer ✅ 6+ Years of Experience ✅ 85+ Mobile Apps Delivered ✅ $20K+ Earned on Upwork ✅ 100% Job Success Score ✅ 5-Star Client Reviews ✅ Long-Term Client Relationships Hi, I'm Mihir Kacha, a Flutter Developer with 6+ years of experience building high-quality mobile applications for startups, businesses, and enterprises. I help clients turn their ideas into fast, scalable, and user-friendly mobile apps for iOS and Android using Flutter. Whether you're building a new MVP, launching a startup, adding AI features, or improving an existing application, I can help you deliver a reliable product that supports your business goals. Over the years, I have successfully delivered 85+ mobile applications across multiple industries while maintaining a 100% Job Success Score and consistently receiving 5-star client reviews. My focus is on writing clean, maintainable code and building applications that are secure, scalable, and easy to maintain. I also provide a FREE 30-minute consultation to discuss your project, validate your idea, recommend the best technology stack, and help you estimate development time and cost. 🏆 Why Clients Hire Me ✔ 6+ Years of Flutter Development Experience ✔ 85+ Successfully Delivered Mobile Apps ✔ Top Rated Freelancer on Upwork ✔ 100% Job Success Score ✔ Clean, Scalable & Maintainable Code ✔ Fast Communication & Daily Updates ✔ On-Time Delivery ✔ Long-Term Support & Maintenance Services I Offer • Flutter App Development • Mobile App Development • Cross-Platform App Development • iOS App Development • Android App Development • MVP Development for Startups • AI-Powered Mobile Applications • Firebase Development • Supabase Integration • REST API & GraphQL Integration • Third-Party API Integration • Payment Gateway Integration (Stripe, Razorpay, PayPal) • Google Maps Integration • Push Notifications (Firebase Cloud Messaging) • Real-Time Chat Applications • Authentication & User Management • Offline Data Storage • Flutter App Migration • Flutter App Modernization • Bug Fixes & Performance Optimization • App Maintenance & Long-Term Support • App Store & Google Play Store Deployment Skills & Technologies Mobile Development • Flutter • Dart • Material Design • Cupertino Widgets State Management • Riverpod • Provider • Bloc • GetX Backend & Database • Firebase • Firebase Authentication • Firestore• Firebase Cloud Messaging (FCM) • Firebase Analytics • Firebase Crashlytics • Firebase Cloud Functions • Supabase • SQLite • PostgreSQL • MySQL API & Integrations • REST APIs • GraphQL • WebSockets • OpenAI API • ChatGPT API • Google APIs • Stripe • Razorpay • PayPal Cloud & DevOps • AWS • Git • GitHub • Bitbucket • CI/CD Mobile Features • Push Notifications • Real-Time Chat • Google Maps • GPS & Location Tracking • Camera Integration • QR Code Scanner • Social Login • Biometric Authentication • Voice & Video Calling • Offline Storage • Analytics & Crash Reporting AI Mobile App Development • OpenAI Integration • ChatGPT Integration • AI Chatbots • AI Assistants • AI Recommendations • AI Content Generation • Voice AI Features • AI Automation • AI-Powered Mobile Applications Industries I Have Worked With • FinTech • Healthcare • EdTech • E-Commerce • SaaS • Logistics • Transportation • Real Estate • Travel & Tourism • Food Delivery • Fitness & Wellness • Social Networking • Marketplace Platforms • On-Demand Services • CRM Solutions • Business Management • Stock Market & Trading • Booking & Reservation Systems • Event Management My Development Process 1. Discovery & Requirement Analysis Understand your business goals, target users, and project requirements. 2. Planning & Architecture Plan the app structure, technology stack, timeline, and development roadmap. 3. UI/UX Implementation Convert Figma or design files into responsive, pixel-perfect Flutter screens. 4. Flutter Development Develop clean, scalable, and maintainable mobile applications. 5. Testing & Quality Assurance Test the application on multiple devices to ensure smooth performance. 6. Deployment Publish the app on the Apple App Store and Google Play Store. 7. Maintenance & Support Provide ongoing updates, feature enhancements, bug fixes, and long-term support. Why Work With Me? ✅ Business-Focused Solutions ✅ Clean & Scalable Architecture ✅ Pixel-Perfect UI ✅ Fast Response Time ✅ Reliable Communication ✅ Daily Progress Updates ✅ High-Quality Code ✅ Long-Term Partnership If you're looking for a Flutter Developer who can build fast, scalable, and high-quality mobile applications for iOS and Android, I'd be happy to help. Whether you need an MVP, a complete mobile app, AI-powered features, Firebase integration, or long-term support, let's discuss your project. 📩 Send me a message today, and let's build something amazing together!

🏆 Upwork TOP RATED PLUS (Top 3%) 🏆 3500+ Hours on Upwork 🏆 Full-Stack Mobile Engineer Are you building a mobile app that needs to perform in the real world — not just look good in a demo? Most apps struggle after launch because the foundation isn’t built right. I focus on building complete mobile products — where UI, backend, APIs, and integrations are designed together — so your app stays stable, scalable, and ready for growth from day one. 📱 Mobile App Development (Native + Cross-Platform) Native • iOS – Swift / SwiftUI • Android – Kotlin / Java Cross-Platform • Flutter • React Native I choose the right approach based on performance, scalability, and product goals — not just trends. ⚙ Backend & System Architecture • Node.js / Express • Laravel (PHP) • Firebase / Firestore / Supabase • REST APIs & WebSocket-based systems • Authentication (JWT, OAuth, secure flows) Backend systems are built to support real users, not just testing environments. 🔗 Integrations & Advanced Capabilities • Payment systems (Stripe, Razorpay, PayPal) • Push notifications & real-time communication • Google Maps, geolocation & tracking • Media upload, compression & streaming • Third-party APIs & enterprise integrations 🤖 How I Use AI (Practically) I use AI where it actually improves outcomes — not just for hype: 1️⃣ AI-powered features inside apps (chat, automation, personalization) 2️⃣ AI-assisted development tools: • Claude – architecture & debugging • GitHub Copilot – faster, cleaner coding • Cursor – real-time code refinement • ChatGPT / OpenAI – testing, logic validation • Replit – rapid working prototypes This results in faster delivery, cleaner builds, and fewer issues later. 🎯 Product Thinking & UI/UX • Figma to production-ready apps • Scalable design systems • Smooth animations & micro-interactions • User flows built for engagement and retention 🚀 What You Get ✔ End-to-end ownership (Idea → Launch → Scale) ✔ Clean, scalable, and maintainable codebase ✔ Reliable performance across iOS & Android ✔ App Store & Play Store deployment support ✔ Long-term collaboration — not just one-off delivery If you’re looking for someone who can take full responsibility for your mobile app — from concept to scale — let’s connect. 📩 Open to discussing your project anytime. 🔑 𝐊𝐄𝐘𝐖𝐎𝐑𝐃: Flutter, Flutter App, Flutter Developer, Flutter Firebase, Dart, Firebase, Swift, Xcode, Interface Builder, UIKit, SwiftUI, Core Data, Auto Layout, App Store Connect, Cocoa Touch, Push Notifications, RESTful APIs, In-App Purchase, App Extensions, TestFlight, Mobile Apps, Firebase, Apple Pay, iPhone Apps, Android Apps, Hybrid Mobile Apps, Senior Mobile Developer, Mobile Apps Developer,Swift, Xcode, Interface Builder, UIKit, SwiftUI, Core Data, Auto Layout, App Store Connect, Cocoa Touch, Push Notifications, Cocoapods, HealthKit, Core Animation, Localization, mobile app development, mobile app design, mobile ui ux designer, mobile, android developer, android, android kotlin, android reverse engineer, ios developer, ios swift, ios app, flutter ios, flutter android, no SQL, rest apis php/laravel backend, Google Map, Google Map Api, Ios Android, Ios App Developer, Ios Developer

Hi, I am the Founder and CEO of a Mobile App Design and Development Agency named App-Knit. We specialise in providing trustworthy and reliable service for your mobile app needs. We have worked on more than 200 Android, iOS, and WEB app projects in the last 6 years. The mobile apps that I have delivered have an average customer rating of 4.5 and above (on a scale of 5). Hence, User Experience (UX) and design are at the heart of all the work we do. Our clients love me for always asking questions to fully understand their mobile app needs, ensuring that we create better apps. Quality is my top priority, and so is keeping deadlines. I am always honest, so don't expect me to lie to you or to your customers. I believe successful collaboration depends on truth and effective communication. I don’t offer one-size-fits-all solutions. Once you contact me, based on the details you’ve provided, I’ll get back to you with some questions or a price quote. Get in touch today to discuss how I can help you!

🌟 100% Job Success Ratio 👨‍💻 10+ Years in Mobile App Development 💼 30+ Successfully Completed Projects 🚀 Hello! I'm Vivek, a seasoned Senior Software Developer and passionate tech enthusiast. I'm eager to assist you in crafting top-tier, modular software that aligns with your requirements while prioritizing performance and security. Why to hire me among thousands of other freelancers? I distinguish myself through an unmatched commitment to work quality and professionalism. Establishing trust with clients and fostering effective communication are integral components of my skill set. As a developer, I strive to keep up-to-date with the latest techs from Android and Apple, and use each standard introduced with ease while following the best guidelines in order to make my code readable and maintainable. I thrive on challenges! With a positive mindset, I approach every task with determination, doing whatever it takes and never giving up. IoT & Bluetooth Development: Experienced in Bluetooth Low Energy (BLE), ESP32 firmware development, IoT hardware integration, and AWS IoT services, with a strong focus on enabling smart device connectivity. Skills: ------- ✔ Cross-platform app development, ✔ RESTful API integration, ✔ Android components (Activities, Services, Broadcast Receivers, Content providers) ✔ Fragments API, Intents, etc. ✔ Java Core, Threads, Collections. ✔ Payment and Social media SDKs integration ✔ Firebase, FreshChat, Socket.io for chat-based application ✔ Voice, Chat and Video calling integrations ✔ Google Map, Ads, In-App Purchase, In-App Billing implementation Version control and Issue tracking - Git, Bitbucket - Trello, JIRA My Working pattern: - Following Complete agile methodology - Trello/Pivotal Tracker implementation - Implementation using best architecture patterns But don't just take my word for it – let my work speak for itself. Check out my portfolio to see some of my past projects and success stories. Don't hesitate to reach out! Your project deserves the expertise and commitment that I bring to the table. Thanks, Vivek

Welcome to my profile! I’m glad you’re here. For the past 9+ years, I’ve been building high-quality, native mobile applications using the best tools available: Swift / SwiftUI / Objective-C for iOS and Kotlin / Java / Jetpack Compose for Android. From sleek, simple apps to massive enterprise-level platforms with complex backend logic, real-time data, and multi-layered architecture — I’ve done it all. Whether you need a beautifully designed iOS app, a lightning-fast Android product, or a full end-to-end solution that brings together frontend, backend, AI, and scalable infrastructure — I can take your idea and turn it into a polished, production-ready product. 🌟 What I Do As a Native Mobile Developer, I specialize in building high-performance iOS and Android apps with strong attention to UI, UX, security, and smooth user experiences. I combine clean architecture patterns with robust backend logic to ensure everything works flawlessly across all devices — smartphones, tablets, smartwatches, Apple TV, and even Android TV. I work with REST APIs, GraphQL, Firebase, Firestore, WebSockets, on-device ML, and advanced mobile architecture patterns to deliver fast, intuitive, and scalable apps. 🚀 Need help with your mobile app? You're absolutely in the right place. 1️⃣ Deep Expertise in Mobile App Development 📱 I collaborate with a strong engineering team of 50+ specialists, delivering full-cycle mobile app development — from idea validation and prototyping to UI/UX, backend architecture, QA testing, store deployment, and long-term support. We build: - Native iOS apps (Swift, SwiftUI, Objective-C) - Native Android apps (Kotlin, Java, Jetpack Compose) - Cross-platform apps (Flutter, React Native, KMM) - Custom backend systems - AI-powered mobile features and automation tools Whether you’re building an MVP or scaling a mature product — we’ve got you covered. 2️⃣ Accelerated Time to Market ⏱⚡ - We deliver apps 30–50% faster than most teams thanks to: - Agile workflows (Scrum/Kanban) - CI/CD automation - Reusable architecture patterns - Parallel development (iOS + Android + backend) - Faster launch = stronger competitive advantage. 3️⃣ Expert Mobile Technologies 🛠️ - Swift, SwiftUI, Objective-C - Kotlin, Java, Jetpack Compose - Flutter, Dart - React Native, TypeScript - Firebase, Firestore, AWS, Node.js, Python, Django - AI/ML integrations Performance, responsiveness, clean code — no compromises. 4️⃣ Exceptional UI/UX Interfaces 🎨 - As a mobile UI/UX designer, I create: - Elegant iOS & Android app designs - Smooth animations (SpriteKit, Lottie) - Pixel-perfect layouts - Intuitive flows aligned with user psychology - Brand-consistent visuals (logo design, branding, Illustrator work) We design with purpose — not just pretty screens. 5️⃣ Scalable Back-End Architecture 🗄️ Your backend is the backbone. Our backend expertise includes: - Node.js, TypeScript - Django, Python - Laravel, PHP - GraphQL & REST APIs - AWS / GCP / Azure / Serverless - Firestore, SQL, NoSQL We ensure flawless performance, even under heavy load. 6️⃣ AI-Powered Mobile Applications 🤖 I integrate: - ChatGPT & LLMs - Custom ML models - Recommendation engines - Predictive analytics - Computer vision tools - Voice & NLP processing Your app becomes smarter, more personal, and more efficient. 💼 Tech Stack Overview Android: Kotlin, Java, Jetpack Compose, Android Studio iOS: Swift, Objective-C, SwiftUI, RxSwift Cross-Platform: Flutter, Dart, React Native, KMM Backend: JavaScript/TypeScript, Node.js, Django, Python, GraphQL, REST API, AWS, SQL Frontend: React, Redux, Vue, MUI, Vuetify Also: branding, UI/UX, DevOps, CI/CD, QA testing, and store publishing. Highlighted Skills android, android developer, android kotlin, android app, reverse engineering (android), android tv app, android/ios smartphone apps, ios, ios developer, ios app, ios ui design, ios marketing, swift, swiftui, app developer, mobile app development, mobile app design, mobile ui ux designer, mobile game developer, cross-platform mobile development, hybrid app development, react, react developer, react native, react native mobile, react typescript, frontend react, backend, backend developer, node, javascript, typescript, firebase, firestore, firebase analytics, react + firebase, python, python developer, machine learning, data scientist, django, kotlin, kotlin developer, kotlin android, kotlin multiplatform, java, flutter, jetpack compose, compose (android), full stack developer, web developer, web design, web designer, branding, logo design, illustrator, wordpress, shopify, laravel, blockchain, apple watch, watchkit, spritekit, watchOS development, tv app, qa testing, app tester, ceros, synology, semrush, upload products 💬 Feel free to message me here on Upwork — I’ll be happy to discuss your project, suggest solutions, and help you bring your vision to life. Regards, Valerii 📆 Last Updated: 12/15/2025