Senior software developer with 9+ years of professional experience. Specialized in native mobile development (iOS/Swift, Android/Kotlin & Java) with a strong full-stack background spanning AI/LLM applications, REST APIs, and cross-platform desktop products. Experience includes building and integrating large language models, setting up CI/CD pipelines, and shipping production apps across mobile, web, and desktop (React, Tauri, C#, Swift).

🚀 𝑭𝒓𝒆𝒆 30-𝑴𝒊𝒏𝒖𝒕𝒆 𝑪𝒐𝒏𝒔𝒖𝒍𝒕𝒂𝒕𝒊𝒐𝒏 𝑪𝒂𝒍𝒍! Share your idea or Figma design, I will define the scope and map out a clear development plan so you know exactly what you are getting before we start. 🌟 𝑬𝒙𝒑𝒆𝒓𝒕 𝑹𝒆𝒂𝒄𝒕 𝑵𝒂𝒕𝒊𝒗𝒆 & 𝑵𝒂𝒕𝒊𝒗𝒆 𝒊𝑶𝑺 𝑴𝒐𝒃𝒊𝒍𝒆 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 𝑺𝒑𝒆𝒄𝒊𝒂𝒍𝒊𝒔𝒕 🌟 I help startups and businesses build high-performance, production-ready mobile apps for iOS and Android, using React Native, Swift, SwiftUI, and Kotlin. From MVPs to full-scale products, I deliver clean, maintainable, and scalable mobile solutions built on industry best practices. With 35+ apps shipped and 5,000+ hours of mobile development, I understand what makes a mobile app succeed, not just technically, but from a real user's perspective. ⚙️ 𝐂𝐨𝐫𝐞 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 1️⃣ 𝑹𝒆𝒂𝒄𝒕 𝑵𝒂𝒕𝒊𝒗𝒆 𝑪𝒓𝒐𝒔𝒔-𝑷𝒍𝒂𝒕𝒇𝒐𝒓𝒎 𝑨𝒑𝒑 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 → Single codebase for iOS & Android, faster delivery, lower cost → Performance-optimized with native modules where it counts → Redux / Zustand state management, React Navigation → Seamless REST API & GraphQL integration 2️⃣ 𝑵𝒂𝒕𝒊𝒗𝒆 𝒊𝑶𝑺 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 (𝑺𝒘𝒊𝒇𝒕 / 𝑺𝒘𝒊𝒇𝒕𝑼𝑰) → Swift & SwiftUI for modern, fluid iOS experiences → Objective-C support for legacy app maintenance & migration → CoreData, CoreLocation, ARKit, HealthKit integrations → App Store submission & compliance, handled end-to-end 3️⃣ 𝑴𝒐𝒃𝒊𝒍𝒆 𝑨𝒑𝒑 𝑨𝒖𝒕𝒉𝒆𝒏𝒕𝒊𝒄𝒂𝒕𝒊𝒐𝒏 & 𝑺𝒆𝒄𝒖𝒓𝒊𝒕𝒚 → OAuth2, JWT, Biometric (Face ID / Touch ID) → Apple Sign-In, Google Sign-In, Firebase Auth → Secure local storage and data encryption 4️⃣ 𝑷𝒂𝒚𝒎𝒆𝒏𝒕𝒔, 𝑹𝒆𝒂𝒍-𝑻𝒊𝒎𝒆 & 𝑨𝒅𝒗𝒂𝒏𝒄𝒆𝒅 𝑭𝒆𝒂𝒕𝒖𝒓𝒆𝒔 → Stripe, Apple Pay, In-App Purchases (StoreKit) → Real-time chat with WebRTC / Twilio / Socket io → Push notifications (APNs, FCM) & deep linking → GPS tracking, Maps (Google Maps, MapKit) 5️⃣ 𝑩𝒂𝒄𝒌𝒆𝒏𝒅 & 𝑨𝑷𝑰 𝑰𝒏𝒕𝒆𝒈𝒓𝒂𝒕𝒊𝒐𝒏 → Firebase (Firestore, Auth, Cloud Functions) → REST APIs & GraphQL, smooth backend connectivity → OpenAI API integration for AI-powered mobile features → Supabase, AWS Amplify, Node.js backends 6️⃣ 𝑴𝑽𝑷 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 𝒇𝒐𝒓 𝑺𝒕𝒂𝒓𝒕𝒖𝒑𝒔 → Rapid prototyping, idea to testable product in weeks → Investor-ready builds with scalable architecture → Post-launch support, iteration, and feature expansion 🧠 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤 Cross-Platform → React Native, Expo, TypeScript iOS Native → Swift, SwiftUI, Objective-C, Xcode Android Native → Kotlin, Jetpack Compose Backend & APIs → Firebase, REST, GraphQL, Supabase Payments → Stripe, Apple Pay, StoreKit Real-Time → WebRTC, Twilio, Socket io Emerging Tech → OpenAI API, ARKit, CoreML 🌍 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐡𝐚𝐯𝐞 𝐒𝐞𝐫𝐯𝐞𝐝 ‣ Food Delivery ‣ E-Commerce ‣ Social Networking ‣ FinTech ‣ Travel ‣ Real Estate ‣ Healthcare ‣ On-Demand Services 💡 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 ✅ Clear, proactive communication at every stage ✅ Clean architecture that scales, not quick hacks ✅ Pixel-perfect UI that matches your design vision ✅ On-time delivery with transparent milestones ✅ Long-term partnership mindset, not just a one-off gig ✉️ 𝐋𝐞𝐭'𝐬 𝐁𝐮𝐢𝐥𝐝 𝐒𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐆𝐫𝐞𝐚𝐭 Whether you have a Figma file, a rough idea, or an existing app that needs improvement, send a message and let's discuss how we can bring your mobile vision to life. 📅 𝐵𝑜𝑜𝑘 𝑎 𝑓𝑟𝑒𝑒 30-𝑚𝑖𝑛𝑢𝑡𝑒 𝑑𝑖𝑠𝑐𝑜𝑣𝑒𝑟𝑦 𝑐𝑎𝑙𝑙 𝑎𝑛𝑑 𝑤𝑎𝑙𝑘 𝑎𝑤𝑎𝑦 𝑤𝑖𝑡ℎ 𝑎 𝑐𝑙𝑒𝑎𝑟 𝑝𝑙𝑎𝑛.

• Upwork Top Rated PLUS with 100% Job Success score. Have an app idea? I can transform your idea into an amazing app in the App Store, I develop highly scalable blazing-fast apps designed for success. Previously, I've worked as a senior iOS engineer in tech unicorn startups and Fortune 500 companies. My passion and experience will ensure quality and peace of mind. Let's start with a quick 15-minute video call!

𝐇𝐞𝐫𝐞'𝐬 𝐭𝐡𝐞 𝐝𝐞𝐚𝐥: Share your idea, and we’ll turn it into a functional, scalable, and beautifully designed app that solves real problems and generates revenue. 𝗛𝗼𝘄 𝗬𝗼𝘂𝗿 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗼𝘃𝗲𝘀 𝗙𝗿𝗼𝗺 𝗜𝗱𝗲𝗮 𝘁𝗼 𝗟𝗶𝘃𝗲 𝗣𝗿𝗼𝗱𝘂𝗰𝘁: Every project follows a clear, proven journey, divided into milestones: UI/UX design → Front-end development → Backend development → Deployment → Post-launch maintenance (8 weeks FREE) This ensures transparency, predictable delivery, and zero surprises. ---------------------------------------------- I offer a 𝗳𝗿𝗲𝗲 𝟯𝟬-𝗺𝗶𝗻𝘂𝘁𝗲 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 to discuss and refine your idea, recommend the right tech stack, and forecast any ongoing costs as your user base grows, so you avoid surprises and make informed decision with clarity. ---------------------------------------------- Words from a recent client after working with us: (check more on my profile below) "𝙍𝙖𝙟𝙖 𝙞𝙨 𝙫𝙚𝙧𝙮 𝙥𝙧𝙤𝙛𝙚𝙨𝙨𝙞𝙤𝙣𝙖𝙡 𝙖𝙣𝙙 𝙞𝙨 𝙖𝙡𝙬𝙖𝙮𝙨 10 𝙨𝙩𝙚𝙥𝙨 𝙖𝙝𝙚𝙖𝙙 𝙤𝙛 𝙠𝙣𝙤𝙬𝙞𝙣𝙜 𝙬𝙝𝙖𝙩 𝙩𝙝𝙚 𝙗𝙪𝙞𝙡𝙙 𝙣𝙚𝙚𝙙𝙨. 𝙒𝙚 𝙖𝙧𝙚 𝙘𝙤𝙣𝙩𝙞𝙣𝙪𝙞𝙣𝙜 𝙩𝙤 𝙬𝙤𝙧𝙠 𝙩𝙤𝙜𝙚𝙩𝙝𝙚𝙧 𝙖𝙣𝙙 𝙄 𝙝𝙖𝙫𝙚 𝙖𝙡𝙧𝙚𝙖𝙙𝙮 𝙧𝙚𝙘𝙤𝙢𝙢𝙚𝙣𝙙𝙚𝙙 𝙝𝙞𝙢 𝙩𝙤 𝙤𝙩𝙝𝙚𝙧 𝙘𝙤𝙢𝙥𝙖𝙣𝙞𝙚𝙨." ⭐⭐⭐⭐⭐ - 𝘼𝙡𝙞𝙘𝙞𝙖 𝘾𝙤𝙬𝙖𝙣 𝙁𝙤𝙪𝙣𝙙𝙚𝙧 𝙈𝙚𝙨𝙢𝙚𝙧 (𝙐𝙣𝙞𝙩𝙚𝙙 𝙆𝙞𝙣𝙜𝙙𝙤𝙢) ---------------------------------------------- I've majored in software engineering, and I've used a myriad of technologies to help various businesses create mobile apps that have generated millions in revenue. Over the past 5+ years, I have developed a wide range of iOS and Android mobile apps. ✅ Food delivery app ✅ Ride booking app (like Uber) ✅ Real estate listing app (Like Airbnb) ✅ Social media mobile app (like TikTok/Instagram) ✅ Startups/Investment management mobile app ✅ Wellness mobile app ✅ Fitness and Nutrition mobile app (like CalAI, MyFitnessPal) ✅ Sports mobile app ✅ E-commerce mobile app ✅ Language Learning Mobile App (Like Duolingo) ✅ Event management mobile app ✅ Grocery/Meal Planning mobile app ✅ Freelance mobile app ✅ Service Booking Mobile App (Home/HVAC) ✅ Inventory Management Mobile App ✅ Learning Management Mobile App ✅ Appointment Booking Mobile App (Salon/Doctor) ✅ Venue Booking Mobile App (Sports/Events) ✅ Task Management Mobile App (Project Management/To-Do) ✅ On-Demand Custom Mobile Apps ---------------------------------------------- As your 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗽𝗮𝗿𝘁𝗻𝗲𝗿, I go above and beyond to ensure your app’s success, from concept to launch. What I Also Bring Beyond Development: → Technology & architecture consulting → Product roadmap & feature prioritization → Help you understand any possible ongoing costs with the project → Cost-effective tech stack selection with long-term cost planning → Scalability strategy as your user base grows → Technical support during investor or stakeholder discussions ---------------------------------------------- 𝗠𝗮𝗶𝗻𝘁𝗲𝗻𝗮𝗻𝗰𝗲 & 𝗟𝗼𝗻𝗴-𝗧𝗲𝗿𝗺 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 I provide free post-delivery support for 8 weeks, followed by flexible maintenance plans based on your product needs, usage scale, and future roadmap, always discussed transparently. ---------------------------------------------- 🚀 If you’re looking for someone who understands your product, owns outcomes, communicates clearly, and thinks long-term, let’s connect and build something solid. ❗❗ Check out my portfolio! ❗❗ Highlighted Skills: Full Stack Developer | Expert Full Stack Developer | Full Stack Mobile App Developer | Full Stack AI Developer | Expert Full Stack Mobile App Developer | Mobile Developer | iOS Developer | Android App Developer | Mobile App Development | Cross platform development | AI App Developer | AI App | Mobile Developer | App Developer | Mobile App Development Consultation | IT Consultation | App Developer | AI App Developer | iOS App Development | iOS App | Android App Development | Hybrid App development | Mobile App Development Consultation | Flutter | Firebase | Dart | Flutter Dart | Flutter Firebase | iOS Development | Android App Development | Smartphone | User Authentication | In App Purchases | API Integration

### Top Rated Plus Mobile App Architect for AI-Ready, Scalable Products I help founders and product teams build **well-engineered MVPs and scalable mobile applications** — designed to validate ideas quickly *and* evolve smoothly as the product grows. As a **Top Rated Plus** mobile app architect with **12+ years of experience**, I’ve delivered complex iOS, Android, and cross-platform apps involving **AI, HealthKit, AR, real-time features, and secure backend integrations** on large, long-term engagements. My focus is on building the **right foundation early**, so your MVP doesn’t need a painful rewrite once traction arrives. ## How I Add Value Clients typically work with me when they want to: * Build an MVP that’s **lean, clean, and future-ready** * Add **AI features** thoughtfully (not as bolt-ons) * Implement HealthKit, AR, or real-time functionality correctly * Scale their app with confidence after validation ## Core Expertise ### AI-Enhanced Mobile Apps * GPT-powered chat, AI search, and content generation * Whisper voice transcription & voice-driven UX * Vision API, CoreML, TensorFlow Lite * Personalization & recommendation systems ### Native & Cross-Platform Development * **iOS:** Swift, SwiftUI, HealthKit, ARKit * **Android:** Kotlin, Java, ARCore * **Cross-platform:** React Native & Flutter ### MVP → Scale Architecture * Modular, maintainable, and extensible app design * Clean codebases that support iteration and growth * App Store & Play Store–compliant builds ### Real-Time & Advanced Features * Live chat, GPS tracking, geo-fencing * Push notifications, video, Firebase * Stripe payments, REST & GraphQL APIs ## Why Clients Choose Me * **Architect-Level Thinking** I design MVPs and products with long-term evolution in mind. * **Hands-On Execution** I stay involved from design decisions to production code. * **Product Awareness** I help teams balance speed, quality, and business goals. * **Proven Trust** Backed by **Top Rated Plus status**, 5-star reviews, and high-value projects. ## Selected Project Highlights * AI-powered HealthTech app using **CoreML + GPT + Apple HealthKit** * AR kitchen planning app from Figma to development-ready architecture * Voice-activated iOS productivity app using **Whisper API** * Scalable eCommerce mobile app with **Stripe & custom CMS** ## Tech Stack Swift | Kotlin | Java | Dart | TypeScript React Native | Flutter | Firebase | CoreML | TensorFlow Lite OpenAI APIs | HealthKit | ARKit | REST | GraphQL MVVM | Clean Architecture | Modular App Design ## Who I’m a Good Fit For ✅ Founders validating ideas through MVPs ✅ Startups preparing to scale ✅ Teams that value clean architecture and reliability If you’re looking for a **Top Rated Plus mobile architect** who can help you **build an MVP the right way and scale it confidently**, let’s connect. — **Sid**

𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝🏆 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐀𝐈 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 | 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐈𝐨𝐬 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐬𝐢𝐠𝐧 | 𝐀𝐈 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐃𝐚𝐭𝐢𝐧𝐠 𝐀𝐩𝐩. Hi there! I'm Nishant, a passionate Mobile App Developer with over 9 years of experience developing intuitive mobile and web apps. As a product designer & developer for startups and solo entrepreneurs, I specialize in building mobile and web applications from the ground up, with a keen eye for essential features that drive user engagement and business success. ✅ 1900+ 𝐇𝐨𝐮𝐫𝐬 as a Mobile App Developer, React Native App Developer, and Flutter App Developer ✅ 54+ Jobs completed on upwork with 5★ Rating ✅ 10+ years industry Experience in Mobile App Development as a Flutter App Developer ✅ 150+ Mobile Apps completed on upwork & other platform With extensive experience in Flutter, Dart, Firebase, REST APIs, and backend creation using node js, I build cross-platform applications that run seamlessly on Android, iOS, Tablets, and Web using a single codebase, reducing development costs while maintaining native-like performance. I have strong experience in AI Mobile App Development, Hybrid Mobile App Development, Native App Development, and Flutter App Development for startups, enterprises, and businesses. 🌍 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐒𝐞𝐫𝐯𝐞𝐝:- • Saas App • Logistic & Fuel Delivery App • Fleet Management App • Ecommerce App & Shopping App • Online Dating App • Food Delivery App,Grocery Delivery App • Restaurant & Cafe App • Taxi App • On-Demand Home Services App • Bakery, Café & Restaurant Management Apps • Chat ,Messaging & video calling App • Social Media App • Real Estate App • Beauty Services & Salon Appointment Booking App • Event Planning & Booking Apps 🔹 𝐂𝐚𝐩𝐚𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬: 𝐂𝐮𝐬𝐭𝐨𝐦 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 – Flutter, Android (Java/Kotlin), iOS (Swift/Objective-C),TReact Native 𝐂𝐫𝐨𝐬𝐬-𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 – High-performance apps for both Android & iOS with single codebase 𝐒𝐨𝐜𝐢𝐚𝐥 𝐌𝐞𝐝𝐢𝐚 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 – Facebook, Google, Apple, Instagram, YouTube logins & APIs 𝐏𝐚𝐲𝐦𝐞𝐧𝐭 & 𝐒𝐮𝐛𝐬𝐜𝐫𝐢𝐩𝐭𝐢𝐨𝐧 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 – PayPal, Stripe, Razorpay, Google Pay, Apple Pay, In-App Purchases, RevenueCat 𝐂𝐡𝐚𝐭, 𝐌𝐞𝐬𝐬𝐚𝐠𝐢𝐧𝐠 & 𝐂𝐚𝐥𝐥𝐢𝐧𝐠 – Real-time chat, audio/video calls, live streaming with Socket, Firebase, Twilio, Agora 𝐋𝐨𝐜𝐚𝐭𝐢𝐨𝐧-𝐁𝐚𝐬𝐞𝐝 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 – Google Maps, Places API, real-time tracking, geolocation 𝐀𝐈 & 𝐌𝐚𝐜𝐡𝐢𝐧𝐞 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 – ChatGPT, OpenAI 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 & 𝐀𝐏𝐈𝐬 – Node.js, Laravel, PHP, REST/GraphQL APIs 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐀𝐮𝐭𝐡𝐞𝐧𝐭𝐢𝐜𝐚𝐭𝐢𝐨𝐧 Two-Factor Authentication (2FA), OAuth, Twilio, Mailgun 𝐐𝐑 & 𝐁𝐚𝐫𝐜𝐨𝐝𝐞 𝐅𝐞𝐚𝐭𝐮𝐫𝐞𝐬– Custom generation, scanning, payment solutions With strong expertise in Flutter, Node.js, and full-stack development, I focus on delivering reliable, high-quality, and scalable solutions. I have hands-on experience with Firebase, push notifications, in-app purchases, payment integrations, maps, and API-based applications. I also offer a free 15-20 minute consultation to refine your idea, recommend the right tech stack, and outline potential scaling costs—so you can make informed decisions with clarity. 🚀If you’re looking for a developer who understands your product, takes ownership, communicates clearly, and builds for the long term—let’s connect. Warm Regards Nishant Bhardwaj Highlighted Skills :- Flutter Developer | Flutter Expert | Mobile App Developer | iOS Developer | Android Developer | Cross-Platform App Development | Mobile app development services in India | Affordable app developers near me | | AI App Developer | AI mobile app development services | expense tracker app | custom mobile app development | cross-platform app development | Ai Mobile App Developer | Flutter App Developer | mobile app builder | mobile app creation | create mobile app | mobile app professionals | mobile app development company | software company | app development agency | iOS and Android app development | Mobile App Development for Startups | Mobile App Development for Enterprises | Mobile App Design | Dating App Development | E-commerce Mobile App | Healthcare App Development | Fitness App Development | mvp app developer | Phone Application Programmer | mvp app development

iOS & Android Mobile App Developer, Shipping Production-Grade Apps with Clean Code & Real Results. Hi, I'm a mobile app developer specializing in iOS & Android with 𝟕+ 𝐲𝐞𝐚𝐫𝐬 of hands-on experience building apps that work. I've shipped 10+ applications for startups and enterprises, from concept to App Store & Google Play launch, each built to perform, scale, and retain users. 𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐂𝐇𝐎𝐎𝐒𝐄 𝐓𝐎 𝐖𝐎𝐑𝐊 𝐖𝐈𝐓𝐇 𝐌𝐄: Most developers write code. I build products that work. When you bring me your iOS or Android project, I deliver a clear roadmap, honest timelines, and genuine commitment to shipping something functional. I understand platform conventions, user retention, and clean architecture, not just features. 𝐇𝐄𝐑𝐄'𝐒 𝐖𝐇𝐀𝐓 𝐈 𝐃𝐄𝐋𝐈𝐕𝐄𝐑: 𝐍𝐚𝐭𝐢𝐯𝐞 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 ✦ Full native iOS development using Swift & SwiftUI for App Store launches ✦ Complete Android development with Kotlin for Google Play optimization ✦ Figma-to-production UI implementation with pixel-perfect design execution ✦ 60fps performance optimization even on budget Android devices ✦ Cross-platform solutions (Flutter & React Native) when appropriate 𝐀𝐏𝐈𝐬 & 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 ✦ REST API integration & Firebase real-time connectivity for live features ✦ Secure authentication (OAuth, biometric, 2FA) & data encryption ✦ Payment gateways (Stripe, Google Pay, Apple Pay, in-app purchases) ✦ Real-time chat, location services, push notifications, and user profiles ✦ Scalable backend design built for future growth and maintenance 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 & 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 ✦ Full App Store & Google Play submission with compliance & testing ✦ Performance audits, crash prevention, zero-downtime deployments ✦ Post-launch monitoring, updates, and ongoing optimization ✦ HIPAA & security standards for sensitive data applications 𝐑𝐄𝐂𝐄𝐍𝐓 𝐒𝐔𝐂𝐂𝐄𝐒𝐒 𝐒𝐓𝐎𝐑𝐈𝐄𝐒: ⭐⭐⭐⭐⭐ Delivered e-commerce platform, 𝟐𝟐% conversion increase, $2M+ GMV in first year ⭐⭐⭐⭐⭐ Built fintech app passing SOC 2 audit, integrated Stripe, 𝟏𝟎𝐊+ transactions/M ⭐⭐⭐⭐⭐ Rebuilt legacy Android app in Kotlin, eliminated 95% crashes, retention +40% 𝐌𝐘 𝐅𝐔𝐋𝐋-𝐓𝐄𝐂𝐇-𝐒𝐓𝐀𝐂𝐊: 📱 iOS: Swift, SwiftUI, UIKit, Xcode, App Store Connect 📱 ANDROID: Kotlin, Jetpack Compose, Android Studio, Google Play Console 📲 CROSS-PLATFORMS: Flutter, React Native, Expo 🔧 BACKEND: Node.js | Laravel | PHP | REST API Development 🗄️ DATABASE: MySQL | MongoDB | Firebase Firestore ☁️ CLOUD: AWS | Firebase Cloud Functions | Google Cloud 🌐 WEB: React.js | Next.js | JavaScript 💳 PAYMENTS: Stripe | PayPal | In-App Purchases | Payment Gateway Integration 🔔 FEATURES: Push Notifications | Real-Time Chat | Google Maps | Social Login | OpenAI API 𝐏𝐄𝐑𝐅𝐄𝐂𝐓 𝐅𝐎𝐑: ✦ Startups launching their first iOS or Android MVP ✦ Founders with validated ideas ready to ship both stores ✦ Established companies needing reliable mobile developers ✦ Teams with unfinished codebases needing rebuilds ✦ Projects requiring ongoing support, features, and optimization 𝐖𝐇𝐀𝐓 𝐌𝐀𝐊𝐄𝐒 𝐌𝐄 𝐃𝐈𝐅𝐅𝐄𝐑𝐄𝐍𝐓: ✦ I finish what I start — no ghosting, no half-built apps, full accountability ✦ Apps built for retention — user psychology, not just feature checklists ✦ Clean, scalable code — SOLID principles, maintainable, future-proof ✦ Transparent communication — clear milestones, honest timelines, weekly updates ✦ Full-cycle delivery — wireframe to both App Store & Google Play launch 𝐑𝐄𝐀𝐃𝐘 𝐓𝐎 𝐁𝐔𝐈𝐋𝐃 𝐘𝐎𝐔𝐑 𝐀𝐏𝐏? If you want an iOS & Android developer who ships quality products, communicates clearly, and treats your project like his own, 𝐥𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤. Send me a message with your app idea. I'll respond within hours with honest feedback, a clear development roadmap, and realistic timelines. 𝐋𝐞𝐭'𝐬 𝐛𝐮𝐢𝐥𝐝 𝐬𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐲𝐨𝐮𝐫 𝐮𝐬𝐞𝐫𝐬 𝐰𝐢𝐥𝐥 𝐚𝐜𝐭𝐮𝐚𝐥𝐥𝐲 𝐥𝐨𝐯𝐞. Highlighted Skills: Mobile App Development | iOS App Development | Android App Development | Flutter Development | Flutter App Developer | Cross-Platform Mobile App | Swift Developer | Kotlin Developer | Full Stack Mobile Developer | Node.js Developer | Laravel Developer | PHP Developer | React.js Developer | Next.js Developer | MySQL | MongoDB | Firebase | AWS | REST API Development | Mobile App Developer | AI App Development | On-Demand App Development | E-Commerce App Development | SaaS Mobile App | Startup MVP Development | App Store Deployment | Google Play Deployment | Mobile App Consultation | Full Stack Developer | Backend Developer

Award-winning native mobile & Firebase / Supabase expert with a secret passion for UI/UX design. I build stunning apps that solve problems to make money in both B2C & B2B. Looking to launch your app business? I will deliver a high-performant native app with beautiful design and clean code, and I'll personally make sure your business succeeds every step of the way. I promise: ✅ Clear communication and fast response times 24/7 (via chat & video calls) ✅ Diligent work on every detail of your app until you are 100% satisfied ✅ Proactive solutions to both tech & UX problems ✅ Meeting deadlines no matter what ✅ 100% Success & 5 stars 📲 From idea to the App Store Designing the UI/UX on Figma, building the app on iOS & Android, setting up the back-end on Firebase/Supabase, producing App Store screenshots that get downloads, researching ASO keywords, designing & coding your Paywall, filing Privacy labels, submitting to Apple,... You name what you need. I've done it all countless times. 📱 Native iOS & Android You get 2 platforms with 1 dev. I build natively in Swift for iOS and Kotlin for Android. No compromises on performance or platform feel, your users get apps that look and behave the way they expect on an iPhone or Android device. 🥇 Hands-On Business Experience I'm a dev with a founder mindset, and I love creating experiences that delight users. In 2024 I won the Design Award for the RevenueCat Ship-a-ton competition, leveraging the Screen Time APIs and integrating with Apple Calendar. (note: we rebranded Flowmino to Studious) 🤖 AI to ship fast and clean I can scaffold UI while setting up your Firebase Cloud Functions. I orchestrate AI agents to write prod-quality code, not vibe-coded slop. I work fast *and* smart! 🔥 Firebase & Supabase Expert I'll handle the back-end while you focus on product & marketing. I'm used to using Firebase and Supabase to build fast, scalable apps with real-time features users love. I'll design a system that grows with your app: Firestore database, Authentication, Cloud Functions in TypeScript, Asset Storage, Security Rules to protect user data... you get an MVP + Back-End, key in hand and ready to scale. 🧑🏻‍💻 Apple Development Frameworks Experience SwiftUI, CloudKit, SwiftData, ScreenTime APIs, WidgetKit, EventKit, LiveActivities, Notifications,HealthKit,... whatever you need, I've got you. 🛜 Extensive API Experience Including AI (OpenAI, Anthropic), financial data (FinancialModelingPrep), cooking recipes (Edamame),... I can work with any API provider your business needs. Ready to be my next 5-star review client? Let's hop on a quick chat to talk through your project. Best Raphael

For more than 10 years I have managed iOS app development. I was also responsible for defining architecture. I have hands on with development of iOS apps in Swift, SwiftUI and Objective-C. I also have hands-on knowledge of Flutter App development. I have developed Flutter app for Vehicle Tracking, Object Detection and Image Segmentation (SSD MobileNet, YOLO, DeepLab+MobileNet) using TensorFlow Lite. I am also PSM I certified. I can provide services as a SCRUM master.

I am a Mobile App Developer & UI/UX Designer with 12 years of experience — I design AND build apps end-to-end, so you get a beautiful product and clean code from one person, with no designer-developer handoff gaps. I maintain 100% Client Satisfaction on Upwork with hundreds of successfully delivered projects across industries. I am a Top-Rated developer specializing in Android (Kotlin/Java), iOS (Swift/SwiftUI), Flutter, and Full-Stack Development, combined with hands-on UI/UX design in Figma — from wireframes and interactive prototypes to complete design systems. AI is a big part of what I do: I've built and shipped real AI-powered apps including ChatGPT integrations, image generators, voice bots, and smart recommendation engines. 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝘄𝗶𝘁𝗵 ✅ UI/UX Design — Wireframes, Prototypes, Design Systems (Figma) ✅ App Redesign — Modernize outdated apps with better UX & conversion ✅ Mobile App Development (Android, iOS, Flutter) with Web Admin Panel ✅ AI-Powered App Development (ChatGPT, OpenAI, Gemini, Stable Diffusion) ✅ AI Chatbots, Voice Assistants & Smart Recommendation Systems ✅ MVP Development & SaaS Application Development ✅ API Development & Third-Party Integrations ✅ Node.js / PHP Backend for Mobile & Web Apps ✅ Firebase Integration (Auth, Firestore, Cloud Functions) ✅ Payment Gateway Integration (Stripe, PayPal, Braintree, Razorpay) ✅ Real-Time Chat, Notifications & WebSocket Integration ✅ App Store & Google Play Deployment (end-to-end) 𝗗𝗼𝗺𝗮𝗶𝗻 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 - Dating & Social Networking Apps - Food Delivery & Restaurant Apps - E-Commerce & Marketplace Apps - On-Demand Service Apps (Taxi, Delivery, Booking) - Health, Fitness & Wellness Apps - Chat, Messaging & Video Calling Apps - Hotel & Travel Booking Apps - Salon, Gym & Beauty Booking Apps - GPS / Geolocation Tracking Apps - Photo & Video Sharing Apps - AI Tools & Productivity Apps - Enterprise & Business Apps 𝗔𝗿𝗲𝗮𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗨𝗜/𝗨𝗫 𝗗𝗲𝘀𝗶𝗴𝗻 - Figma, Wireframing, Prototyping, Design Systems, Material Design, Apple Human Interface Guidelines, Responsive & Mobile-First Design 𝗔𝗜 & 𝗠𝗟 - OpenAI (GPT-4/4o), Google Gemini, Stable Diffusion, Whisper, LangChain, AI API Integrations 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 - Android (Java/Kotlin), iOS (Swift/Objective-C), Flutter (Dart) 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 - React.js, HTML5, CSS3, Responsive Web Design 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 & 𝗔𝗣𝗜𝘀 - Node.js, PHP, REST APIs, JSON, XML, GraphQL 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 & 𝗖𝗹𝗼𝘂𝗱 - MySQL, MongoDB, SQLite, Firebase, Firestore 𝗥𝗲𝗮𝗹-𝗧𝗶𝗺𝗲 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀 - Socket, Firebase Real-Time DB, Twilio (Chat, Audio/Video Calls) 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗚𝗮𝘁𝗲𝘄𝗮𝘆𝘀 - Stripe, PayPal, Braintree, Google Pay, Apple Pay, In-App Purchases 𝗠𝗮𝗽𝘀 & 𝗟𝗼𝗰𝗮𝘁𝗶𝗼𝗻 - Google Maps, Apple Map Kit, GPS Tracking, Geolocation 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 & 𝗔𝘂𝘁𝗵 - OAuth, 2FA, Push Notifications, Google Analytics 𝗩𝗲𝗿𝘀𝗶𝗼𝗻 𝗖𝗼𝗻𝘁𝗿𝗼𝗹 - GitHub, GitLab, Bitbucket, SVN 𝗪𝗵𝗮𝘁 𝗺𝗮𝗸𝗲𝘀 𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗺𝗲 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 🚀 Design + Development in one — I design in Figma and build the exact same experience in code, pixel-perfect 🚀 Consistent on-time or early delivery, every single project 🚀 Real AI experience — not just buzzwords, actual shipped AI products 🚀 Complete app store deployment on Apple Store & Google Play Store 🚀 Agile Scrum methodology with regular updates & sprint meetings 🚀 Full IP/ownership rights from day one, code committed to your GitHub 🚀 Strictly follows Apple & Google guidelines for compliance 🚀 Post-launch maintenance & performance optimization support I've worked with startups, scale-ups, and enterprises — helping them design, develop, launch, and scale high-performance mobile and web applications that look great and work flawlessly across devices. 👉 Let's start with a 𝗙𝗥𝗘𝗘 𝟭𝟱–𝟯𝟬 𝗺𝗶𝗻𝘂𝘁𝗲 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 — no commitment, just a clear plan for your project. Message me today and let's build something great 🚀