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Have an app idea but not sure where to start? A few years ago, I was sitting exactly where many of my clients are today: trying to turn an idea into an app. After years of mistakes and learning to code, I ended up building SchooLinks, which grew into an Inc. 5000 business and raised over $90 million. Since then, I focus on designing and developing apps for founders and entrepreneurs with no technical background. People who have identified a problem that an app could solve, but they don't know how to build it. They have the vision, but they don't have the tech partner. And these are the results my clients have gotten: • $350M+ raised by clients • 2M+ users across products built • 10K+ five-star reviews across products built • Top 1% in App Design & Development on Upwork Book a consultation with me today! I’ll save you months of frustration by helping you understand the ins and outs of bringing an app to life: How much it costs, how long it takes, what’s the process and more. The apps I’ve built usually come in the form of: SaaS platforms, internal platforms, Mobile & web apps, Marketplace apps. Trusted By: Harvard, Samsung, Indeed, Yamaha, University of South Florida, and more. Technologies: OpenAI, Claude, Gemini, Flutter, Node.js, Angular, AWS, MongoDB, Figma If you’re serious about building your app the right way, let’s talk!

𝐌𝐎𝐁𝐈𝐋𝐄 𝐀𝐏𝐏 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐄𝐑 iOS | Android | Flutter | React Native | AI Integration | Vibe Coding 🏆 Top Rated Plus on Upwork (Top 3%) 💯 100% Job Success 📈 9+ Years Experience 💬 Fluent English With 9+ years of experience, I specialize in designing and developing innovative, high-performance mobile apps for iOS, Android, and cross-platform ecosystems. I build intelligent, scalable, and user-centric solutions that integrate AI, ChatGPT, and modern technologies to create seamless, next-generation digital experiences. ⭐ 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀 ✔️ Top Rated Plus on Upwork — Top 3% of freelancers globally ✔️ 35,000+ hours worked | 400+ projects completed ✔️ 100% Job Success Score ✔️ 86% long-term repeat clients ✔️ Fluent English — strong communication and agile delivery mindset ✔️ End-to-end development: from wireframe to App/Play Store launch and beyond ✔️ Post-launch support, updates, and performance monitoring 📱 𝗠𝗢𝗕𝗜𝗟𝗘 𝗔𝗣𝗣 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 • 𝗡𝗮𝘁𝗶𝘃𝗲 𝗶𝗢𝗦: Swift, SwiftUI, Objective-C, Xcode • 𝗡𝗮𝘁𝗶𝘃𝗲 𝗔𝗻𝗱𝗿𝗼𝗶𝗱: Kotlin, Java, Android Studio • 𝗖𝗿𝗼𝘀𝘀-𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺: Flutter, FlutterFlow, React Native, Dart • REST API & third-party API integration (Payment gateways, Social login, Maps, etc.) • Firebase integration (Authentication, Firestore, Push Notifications, Analytics) • Clean architecture (MVC, MVVM, MVP) & scalable code practices • UI/UX focused development with pixel-perfect design implementation • App performance optimization & debugging • Version control using Git (GitHub, GitLab, Bitbucket) • CI/CD setup & deployment (TestFlight, App Store, Play Store) • Agile development approach with strong communication and collaboration skills ⚙️ 𝗡𝗢-𝗖𝗢𝗗𝗘 / 𝗟𝗢𝗪-𝗖𝗢𝗗𝗘 𝗣𝗟𝗔𝗧𝗙𝗢𝗥𝗠𝗦 • AI-Powered Builders: Lovable.AI, Bolt.new, Cursor, v0 by Vercel, Replit, Copilot, Claude/Anthropic • App Builders: FlutterFlow, Bubble, Glide, Adalo • Automation: Zapier, Make (Integromat), n8n ☁️ 𝗕𝗔𝗖𝗞𝗘𝗡𝗗 & 𝗖𝗟𝗢𝗨𝗗 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 • Firebase: Firestore, Realtime DB, Auth, Storage, Cloud Functions • AWS: EC2, Lambda, S3, Amplify, Lightsail • GCP | Microsoft Azure | Supabase | Vercel | Hostinger 🗄️ 𝗗𝗔𝗧𝗔𝗕𝗔𝗦𝗘𝗦 Firestore | MySQL | PostgreSQL | MongoDB | SQLite | Realm | Core Data | Supabase 🤖 𝗔𝗜 & 𝗔𝗨𝗧𝗢𝗠𝗔𝗧𝗜𝗢𝗡 • ChatGPT API & OpenAI Integration • Natural Language Processing (NLP) • Voice & Speech AI • Predictive Analytics 🎨 𝗨𝗜/𝗨𝗫 𝗗𝗘𝗦𝗜𝗚𝗡 Figma | Sketch | Adobe XD | InVision | SwiftUI | Jetpack Compose | Flutter Widgets | Material UI 🔑 𝗞𝗘𝗬 𝗙𝗘𝗔𝗧𝗨𝗥𝗘𝗦 & 𝗜𝗡𝗧𝗘𝗚𝗥𝗔𝗧𝗜𝗢𝗡𝗦 ✔️ Secure User Authentication & Social Logins (Google, Apple, Facebook, Twitter, LinkedIn) ✔️ Payment Gateways: Stripe, PayPal, Razorpay, Apple Pay, Plaid, In-App Purchases & Subscriptions ✔️ Real-Time Chat & Messaging (Twilio API, Firebase Chat) ✔️ Push Notifications | Video Calling | WebRTC ✔️ Maps & Geolocation: MapKit, Mapbox, Google Maps ✔️ Health & Fitness: HealthKit, Google Fit ✔️ Analytics: Firebase Analytics, Mixpanel, Crashlytics, Google Analytics ✔️ QA & Testing: Unit Testing, Integration Testing, Regression Testing ✔️ Project Tools: Git, GitHub, Bitbucket, JIRA, Trello, Asana 🌍𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗜𝗘𝗦 𝗦𝗘𝗥𝗩𝗘𝗗 E-Commerce | Fintech & Banking | Health & Fitness | Social Networking & Dating | On-Demand Services | Food Delivery | Ride Booking | Real Estate | SaaS | Education & E-Learning | Media & Entertainment | Streaming & Audio | Healthcare | Logistics & Transport | Marketplace | Travel & Navigation | Wellness & Coaching | Legal Services | Event & Booking | Automotive | Fashion & Lifestyle | Hospitality 🔍 KEYWORDS Mobile App Developer · iOS App Developer · Android App Developer · Flutter Developer · React Native Developer · FlutterFlow Developer · Swift Developer · Kotlin Developer · Full Stack Developer · Web Application Developer · SaaS Developer · MERN Stack Developer · Firebase Developer · AWS Developer · Node.js Developer · React.js Developer · Next.js Developer · API Integration · ChatGPT Integration · AI App Developer · Lovable.AI · Bolt.new · No-Code Developer · Low-Code Developer · FlutterFlow · Bubble · Webflow · WordPress Developer · WooCommerce · Shopify · Strapi · Contentful · CMS Development · Plugin Development · Theme Development · Fintech App Developer · E-Commerce App Developer · Dating App Developer · Ride Booking App Developer · On-Demand App Developer · Cross-Platform App Developer · RESTful API · GraphQL · TypeScript · Supabase · Payment Gateway Integration · In-App Purchases · Push Notifications · HealthKit · MapKit · Mapbox · Alamofire · Twilio · Google Analytics · QA Testing · Unit Testing · Regression Testing · Figma · UI/UX Design

🏆 15+ Years Experience | 1M+ App Downloads If you’re looking for top-quality App development, not just average work — you’ve come to the right place. I build high-performing, scalable, and beautifully crafted Mobile, Web & Desktop apps that clients rely on for the long term in real quick time using AI & LLM tools. With 15+ years of experience and apps exceeding 1 Million+ downloads on the Play Store, I’ve worked with startups and established brands to turn complex ideas into stable, user-loved apps. Clients stay with me because I focus on code quality, performance, and results — not shortcuts. ⸻ 💡 What I Offer ✅ Production-ready apps ✅ Clean, modular, and testable architecture ✅ Clear communication & reliable delivery ✅ Long-term collaboration and maintenance support ⸻ ⚙️ Technical Expertise Flutter & Dart: Riverpod, Provider, BLoC React & React native Testing: Unit, widget, and integration tests AI Integration: ChatGPT & Google Gemini Chat Systems: 1-to-1 & group chat with voice, video & attachments Video Calling: Conferencing via LiveKit / WebRTC Maps: Google Maps & vector maps Deep Linking: App Links & Universal Links Analytics: Google Analytics, Amplitude Marketing: Appsflyer Payments: Stripe & in-app purchases Ads: Google Ads integration Firebase Suite: Auth, Firestore, Storage, Messaging, Functions, Hosting, Dynamic Links, Remote Config, App Distribution Supabase Suite: Auth, Database, edge functions, storage ⸻ 🚀 Let’s Build Something Exceptional I take pride in my work — every line of code reflects that. If you want a developer who values quality, communication, and craftsmanship, let’s connect and discuss how I can help bring your vision to life.

⭐️⭐️⭐️⭐️Building digital products that scale with your business.⭐️⭐️⭐️⭐️ ⭐️⭐️12+ Years of Excellence | 5000+ Projects Delivered Worldwide⭐️⭐️ 💯 Fast Response Time – Get Replies Within 30 Minutes 💯 ⌚ Delivering On-Time, On-Budget, and Future-Ready Solutions ⌚ Hi, I’m Sumanta, a senior full-stack and mobile app developer with 12+ years of experience delivering high-quality, scalable, and user-friendly applications for startups, enterprises, and growing businesses worldwide. My focus is simple: turning your vision into a robust product that performs flawlessly across devices. From idea validation to launch and ongoing support, I ensure a smooth development journey backed by transparent communication and on-time delivery. What I Offer:- ----------------- Mobile Application Development (Native & Hybrid): * Native iOS (Swift, Objective-C) & Android (Kotlin, Java) * Hybrid apps with Flutter & React Native * Performance-driven, scalable apps with smooth UI/UX * Integration with APIs, third-party services & cloud backends Web Application Development: * Full-stack solutions using MERN / MEAN stack * Python (Django/Flask) & Laravel for scalable backend systems * Secure RESTful & GraphQL API development * WordPress or other headless CMS for Content Management * Responsive, modern, and optimized web applications ✅ Why Clients Hire Me: * Proven track record of delivering production-ready apps used by thousands of users * Clear, proactive communication—no guesswork or delays * Attention to detail: I treat every project as if it’s my own product * Post-launch support to ensure long-term success If you’re looking for a dependable partner who can architect, build, and scale your mobile or web application, let’s connect. I’d love to discuss your project and show you how I can add value.

🏆 𝐓𝐨𝐩 𝟏% 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐢𝐎𝐒 (𝐒𝐰𝐢𝐟𝐭/𝐒𝐰𝐢𝐟𝐭𝐔𝐈) & 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐄𝐱𝐩𝐞𝐫𝐭 | 𝐇𝐢𝐠𝐡 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 MVP & 𝐏𝐢𝐱𝐞𝐥 𝐏𝐞𝐫𝐟𝐞𝐜𝐭 UI | 𝐋𝐨𝐧𝐠 𝐓𝐞𝐫𝐦 Support | Worked with | 𝐂𝐡𝐞𝐜𝐤𝐨𝐮𝐭 𝐩𝐨𝐫𝐭𝐟𝐨𝐥𝐢𝐨 With 50,000+ hours delivered on Upwork, a 100% Job Success Score, and Top Rated Plus status, AppMakers has become a trusted mobile app development partner for startups, scale-ups, and enterprise companies worldwide. Our team has contributed to products used by millions of users, including Hims & Hers 🇺🇸, Insight Timer 🇦🇺, Cal AI 🇺🇸, TejiMandi 🇮🇳, and 3Asafeer Education 🇦🇪. ⭐️ 𝐖𝐡𝐚𝐭 𝐰𝐞 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐰𝐢𝐭𝐡 ✅ Mobile Development - iOS (Swift, SwiftUI), Android, Flutter, React Native (Expo) - Pixel-perfect UI implementation with smooth performance - Custom animations, transitions, and polished user experience - Deep debugging, performance tuning, and stability improvements ✅ Backend & Infrastructure - Firebase, Supabase, PostgreSQL, MySQL - AWS & Google Cloud (GCP) - Scalable backend architecture and API design - REST APIs (Node.js, Python, Django, PHP) ✅ Monetization & Payments - In-App Purchases & Subscription Systems - Integration with RevenueCat, Superwall, Adapty - Stripe payment integrations (one-time & recurring) - Paywall optimization, pricing strategy & lifecycle handling ✅ Analytics & Growth - Mixpanel, Firebase Analytics, AppsFlyer, Branch - Funnel tracking, conversion optimization & retention strategy - A/B testing and data-driven product decisions ✅ AI & Advanced Features - AI integrations, chatbots & LLM-powered experiences - Voice-based features & real-time interactions - Integration with Gemini APIs & OpenAI APIs - ML-based personalization & automation ✅ Deployment & Scaling - App Store & Play Store publishing (compliance-ready) - CI/CD pipelines and automated deployments - Performance optimization & scalability planning - Long-term maintenance, updates & feature scaling 🚀 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗜𝗻 🌟 AI-Powered Mobile Apps (Chat, Automation, LLM APIs) 🌟 Health, Fitness & Wellness Apps 🌟 Telehealth & Remote Care Apps 🌟 Mental Health, Meditation & Self-Care Apps 🌟 Real-Time Video & Live Streaming Platforms 🌟Real Estate & Property Management Apps 🌟 Video Sharing & Creator Economy Apps 🌟 E-Learning & EdTech Platforms 🌟 E-Commerce & Marketplace Apps 🌟 On-Demand Service Apps (Taxi, Food, Delivery, Booking) 🌟 Chat, Messaging & Social Networking Apps 🌟 SaaS & Subscription-Based Mobile Platforms 🌟 Fintech, Payments & Personal Finance Apps 🌟 Coaching, Consulting & Personal Brand Apps 🌟 IoT & BLE-Enabled Smart Device Applications ⚡ 𝗪𝗢𝗥𝗞𝗜𝗡𝗚 𝗔𝗣𝗣𝗥𝗢𝗔𝗖𝗛 • Strategy-first approach with clear product direction • Clean, maintainable architecture designed to scale • Honest timelines and realistic expectations • Consistent updates with zero communication gaps • Long-term partnership mindset, not one-time delivery • Limited client deal to maintain quality and attention 🎁 𝗪𝗛𝗔𝗧 𝗬𝗢𝗨 𝗚𝗘𝗧 - A strategic technical partner, not just a developer - Honest feedback (even if it saves you money) 📩 𝗟𝗘𝗧'𝗦 𝗧𝗔𝗟𝗞 If you're serious about building something that works for long term, execute by right team - hit "Invite Now." Let's talk. ----------------- AI Development, AI App Development, AI-Powered Mobile Apps, Custom AI Solutions, AI Agents Development, AI Integrations, AI Chatbot Development, Mobile App Development, Mobile App Developer, iOS App Development, iOS App Developer, Android App Development, Android App Developer, Flutter App Development, Flutter App Developer, React Native App Development, Cross-Platform App Development, Hybrid App Development, Custom Mobile App Development, Application Development, Mobile Apps, App Development, MVP Development, Full Stack Developer, Full Stack Development, Web Development, Web Developer, Full Stack Web Development, MERN Stack Developer, Node. js Development, SaaS Product Development, Custom Software Development, E-commerce Development 👉 Click “Invite to Job” or “Message”

🏆 Top-Rated Full-Stack Developer | AI-powered Flutter & Next.js apps with GPT-4o, Claude, RAG & Voice AI | 22+ Upwork Projects | 60+ Products Shipped | Clients across US/UK/MENA | Replies within 2 hours Hi, I’m Ishit, a Top Rated Flutter & AI Mobile App Developer with 8+ years of experience building high‑performance, scalable, cross‑platform mobile, web, and desktop applications. I build mobile, web, and AI-powered apps that ship — Flutter for mobile, Next.js for web, and AI integrations (voice agents, chatbots, n8n automations, RAG) that make them feel like 2026 products. 💡 What I Deliver AI‑Powered Mobile Apps Real‑Time Chat, Video Calling & Live Streaming Platforms Cross‑Platform Apps (Flutter, Flutter Web, Flutter Desktop) Mobile MVPs & Scalable Startups Apps Hyper‑Personalized User Experiences Predictive Analytics & Smart Recommendation Systems 5G‑Optimized High‑Performance Apps Edge AI & On‑Device Intelligence Features Augmented Reality (AR) & Immersive Experiences Super Apps & Multi‑Service Platforms Secure, Privacy‑First, Enterprise‑Ready Applications 💼 Why Clients Partner With Me 65+ apps delivered globally 5M+ downloads & high user retention 70% repeat clients & long‑term collaborations Investor‑ready MVPs with scalable architecture Agile development with CI/CD & automated testing Clear communication and reliable delivery ⚙️ Tech Stack & Core Skills 🖥 Cross‑Platform & Frontend Flutter (iOS, Android, Web, Desktop) Dart, React Native, Next Js Responsive UI/UX, Adaptive Layouts Clean Architecture, Modular & Scalable Code Design Systems & Motion UI (Rive, Lottie Animations) 🤖 AI & Intelligent Features ChatGPT & Large Language Models (LLMs) On‑Device AI & Edge Machine Learning Predictive Analytics & Smart Suggestions Voice UI, Natural Language Interfaces Image Recognition & Vision‑Based Interactions 🌐 Backend & APIs Node.js, Laravel, Serverless Functions Firebase Auth, Firestore, Realtime DB, Cloud Functions REST APIs, GraphQL, Secure Authentication Cloud & Edge Integration, Real‑Time Sync AWS DynamoDB, Lambda, S3, Cloudfront, Lightsail 💾 Databases & Performance Firebase, DynamoDB, PostGRES SQL, MongoDB, MySQL, Hive, Local Cache Offline‑First Strategy, Data Sync, Edge Caching Performance Optimization & Memory Efficiency 💳 Payments & Monetization Stripe, Razorpay, PayPal, Paytm, Easebuzz In‑App Purchases, Subscription Billing & Webhooks 🔗 Integrations & Real‑Time Features Live Chat, Push Notifications Voice & Video Calls (WebRTC, Agora, 100ms) GPS, Maps & Location‑Based Services Bluetooth, Camera, Sensors, Offline Mode 🔒 Security & Compliance GDPR, Data Encryption, Biometric Authentication Secure Token Management, Privacy‑First Design 🛠 DevOps, Tools & Deployment GitHub / GitLab / Bitbucket CI/CD (Codemagic, Fastlane, automated build pipelines) Figma, Adobe XD, Postman Testing & Deployment to App Stores 🌟Industries & Use Cases I Serve Fintech & Banking Apps Health & Fitness Platforms Education & E‑Learning On‑Demand & Logistics Apps Social & Community Networks E‑Commerce & Marketplace Systems SaaS & Enterprise Systems IoT & Smart Device Control Apps 💬 Let’s Build Your Next Big Idea! If you’re launching a cutting‑edge mobile app, an AI‑enabled platform, or a next‑gen cross‑platform product, let’s discuss how I can help accelerate your success.