Hire the Best WinDev Mobile Specialists
in India

🥇 Top Rated | 100% Job Success | 5-Star Reviews | 20 Jobs 🏆 300+ Upwork hours with productive work and great client feedback 🟢 50+ mobile apps & 20+ websites live 🧑‍💻 13+ years of experience in full-stack mobile & AI development 🕒 Available in EST/PST-working hours. 🙋‍♂️Quick responses (<5 mins) unless I’m asleep, and excellent weekend support I will transform your Lovable or Replit web app into a high-performance native iOS & Android app that feels truly "App/Play Store ready"—not just a website in a wrapper. With a 100% Job Success Score and consistent 5-star feedback, I excel in delivering seamless web-to-mobile transitions that meet all requirements for a successful store launch. As a Capacitor, Ionic, Angular, and Flutter expert and Front-End Developer, I specialize in building high-quality hybrid mobile apps and websites tailored to specific business requirements. I also help in debugging, optimizing, and improving existing applications. I have strong expertise in converting websites into fully functional mobile applications. I have successfully transformed many Lovable AI websites into iOS and Android apps with smooth performance and native-like experience. With over 13+ years of experience in app and web development, I enjoy working with technologies like Capacitor, Ionic, Angular, Flutter, and Cordova/PhoneGap. As an active contributor to the Capacitor and Ionic ecosystem, I have contributed to multiple repositories, including capacitor-docs, capacitor-background-runner, ionic-framework, and capacitor-plugins. These contributions reflect my commitment to improving and strengthening the Ionic community. Let’s collaborate to turn your ideas into powerful and scalable software solutions. I’m confident I can help you achieve your development goals efficiently and professionally. Skills: ► Capacitor
► PhoneGap / Cordova
► Ionic
► Angular
► React
► Flutter
► Dart
► GetX
► Riverpod
► Hybrid App Development
► Electron
► Ionic Plugin Development
► Capacitor Plugin Development
► Custom PhoneGap/Cordova Plugin Development
► Firebase
► NGRX
► Object-Oriented JavaScript
► SQLite
► PHP
► HTML
► CSS
► REST APIs
► RevenueCat
► Publishing Android & iOS Apps IDEs I am familiar with: ► Visual Studio Code
► Android Studio
► Xcode

I’m a Mobile App Developer with hands-on experience building, converting, publishing, and maintaining production-ready iOS and Android applications using React Native, Flutter, Capacitor, Ionic, Vue, and Quasar. I can take your mobile app from development → API/backend integration → testing → App Store/Google Play submission → production maintenance. 📱 Mobile App Development React Native app development Flutter & Dart Capacitor & Cordova Ionic / Angular Vue / Quasar iOS & Android app development Convert existing web applications into mobile apps Custom native integrations and plugins REST API & backend integrations 🚀 Published Production Apps I have worked on and shipped applications that are live on both the Apple App Store and Google Play Store, including applications used by real users. ClinicOne — Healthcare Mobile Application AutoBroker — Automotive Marketplace Application These projects involved real-world API integrations, authentication, location-based functionality, mobile UI, backend integration, production releases, and app-store deployment. 🔥 Firebase & Backend Firebase Authentication Firestore Firebase Storage Firebase Cloud Functions Firebase Cloud Messaging (FCM) Push notifications REST API integration Google Cloud integrations 💳 Payments & Third-Party Integrations Stripe Razorpay Payment gateway integration Google / Facebook / Apple / LINE login Phone OTP authentication Google Maps & location-based features Third-party API integrations 🎬 Video & Audio Development FFmpeg Video processing Audio processing Video conversion and compression Media manipulation Automated video/audio processing tools 🍎 App Store & Google Play Publishing I can also handle the complete mobile app publishing lifecycle: Apple App Store submission Google Play Store submission App signing & certificates iOS provisioning profiles Play Console configuration App Store / Play Store compliance Production releases and updates Troubleshooting publishing and review issues 💼 What I Can Help You With ✔ Build a mobile application from scratch ✔ Convert an existing website/web app into iOS & Android apps ✔ Build cross-platform apps with React Native, Flutter or Capacitor ✔ Fix and improve existing mobile applications ✔ Integrate Firebase, APIs, payments, maps and notifications ✔ Implement authentication and social login ✔ Publish applications to the Apple App Store and Google Play ✔ Develop video/audio processing features using FFmpeg ✔ Maintain and improve existing production applications I focus on clean implementation, reliable communication, production stability, and long-term maintainability. If you have a Figma design, existing web application, API, existing mobile app, or technical requirements, I can help turn it into a production-ready iOS and Android application.

I develop high-performance hybrid mobile applications that deliver reliable results in real-world environments, including Firebase integrations, push notifications, custom native plugins, and complex SDK integrations. With 14+ years of experience and over 200 successfully delivered projects, I specialize in building, optimizing, and maintaining Android and iOS applications using Ionic, Cordova, Capacitor, Vue.js, and React Native. I help businesses launch scalable, cost-effective mobile solutions and solve critical issues that other developers struggle to fix. My expertise includes app stabilization, performance optimization, native SDK integration, App Store compliance, and troubleshooting complex mobile application challenges. ### What I Can Do for You ✔ Develop cross-platform mobile applications (Android & iOS) from scratch ✔ Convert existing websites or web applications into mobile apps ✔ Develop custom Cordova and Capacitor plugins ✔ Integrate native iOS and Android SDKs into Ionic applications ✔ Diagnose and resolve crashes, bugs, and performance bottlenecks ✔ Upgrade legacy applications (Cordova → Capacitor migration) ✔ Integrate APIs, Firebase services, and third-party platforms ✔ Resolve App Store and Google Play review and deployment issues ✔ Optimize application speed, stability, and user experience ### Technical Expertise • Ionic Framework (Angular & Vue) • Apache Cordova & Capacitor • Vue.js & React Native • JavaScript, TypeScript, HTML5, CSS3 • Native Android (Java/Kotlin) • Native iOS (Swift/Objective-C) • Firebase (Authentication, Firestore, Analytics, Push Notifications) • REST APIs & Third-Party Integrations • WebView Optimization & Plugin Debugging ### Specialized SDK & Plugin Development • Custom Cordova Plugin Development • Custom Capacitor Plugin Development • Native SDK Bridging for Ionic Applications • Microblink BlinkID Integration • Passport, Driver's License & ID Card Scanning • Selfie Verification & Face Matching • OCR & Document Data Extraction • Barcode & QR Code Scanning • Camera & Media Processing Integrations • Biometric Authentication • Payment Gateway SDK Integrations • Push Notification SDK Integrations One of my key specialties is developing custom native plugins for Ionic, Cordova, and Capacitor applications. I have successfully built and integrated complex SDKs, including Microblink BlinkID, enabling passport scanning, driver's license scanning, ID card recognition, selfie matching, and OCR-based data extraction on both Android and iOS. When a required SDK does not have an existing plugin, I can build the complete native bridge and integration from scratch. ### Why Clients Work With Me • Strong expertise in solving complex mobile application issues • Advanced debugging skills across native and hybrid environments • Extensive experience with plugin development and SDK integrations • Clear communication and reliable delivery • Proven track record with production-grade and long-term projects If your application is experiencing crashes, performance issues, SDK integration challenges, App Store rejections, or deployment problems, I can quickly identify the root cause and implement a reliable solution. From concept → development → deployment → scaling, I manage the complete mobile application lifecycle. Available to start immediately.

I build mobile apps that scale, retain users, and generate revenue not just apps that ship. I'm proud to be part of Toptal's Top 3% developer network, and one of the production apps I've worked on has surpassed **5M+ downloads**. I have hands-on experience in app monetization, performance optimization, Play Store/App Store releases, and building reliable mobile experiences at scale. I'm also an active member of the developer community with **5,449 Stack Overflow reputation** and **280+ answers**, where I enjoy helping developers solve real-world engineering challenges. With **10+ years of experience**, I've built mobile applications across **Android, Flutter, iOS, React Native, Kotlin Multiplatform (KMP), BLE, IoT, and POS solutions**. I've delivered banking applications, healthcare platforms, AI-powered products, wearable and connected-device solutions, POS and payment applications, video streaming platforms, chat systems, and enterprise applications used by thousands to millions of users. Beyond mobile development, I specialize in **Bluetooth Low Energy (BLE)** communication, wearable device integration, companion apps, IoT connectivity, firmware-to-mobile communication, real-time data synchronization, offline-first architectures, OTA firmware update workflows, secure device provisioning, and **POS terminal integration**, including payment workflows and peripheral device connectivity. ## WHAT I BUILD ✓ Android Apps (Kotlin, Java, Jetpack Compose) ✓ Flutter Apps ✓ iOS Apps (Swift, SwiftUI) ✓ React Native Apps ✓ Kotlin Multiplatform (KMP) ✓ BLE & IoT Applications ✓ Wearable & Connected Device Solutions ✓ POS & Payment Applications ✓ Companion Apps for Smart Devices ✓ AI-Powered Mobile Applications ✓ Chat, Messaging & WebRTC Video Calling ✓ Fintech & Banking Solutions ✓ Healthcare & Telemedicine Apps ✓ OTT & Video Streaming Platforms ✓ SaaS & Enterprise Applications ## BLE, IoT & POS EXPERTISE ✓ Bluetooth Low Energy (BLE) Communication ✓ GATT Services & Characteristics ✓ Device Pairing & Provisioning ✓ Wearable Device Integration ✓ Smart Home & Connected Devices ✓ POS Terminal Integration ✓ Payment Device Connectivity ✓ BLE Reconnection Strategies ✓ Background Synchronization ✓ OTA Firmware Updates (FOTA) ✓ Sensor Data Processing ✓ Real-Time Device Communication ## MONETIZATION & DEPLOYMENT ✓ App Monetization Strategy (AdMob, Ad Revenue Optimization) ✓ App Store & Play Store Release Support ✓ CI/CD & Release Management ✓ Performance Optimization for High-Download, High-Retention Apps ## TECH STACK Kotlin • Jetpack Compose • Flutter • Swift • SwiftUI • React Native • Kotlin Multiplatform • BLE • IoT • POS • WebRTC • Firebase • GraphQL • REST APIs • Supabase • AWS • Room • SQLDelight • Coroutines • Hilt • MVVM • MVI • Clean Architecture ## WHAT CLIENTS GET ✓ Fast Development ✓ Clean, Scalable Architecture ✓ Daily Communication ✓ Long-Term Support ✓ Production-Ready Code ✓ BLE, IoT & POS Integration Expertise ✓ App Store & Play Store Release Support Whether you need a new mobile app, a senior engineer to rescue a struggling project, build a BLE-enabled wearable solution, integrate connected devices, develop a POS application, or scale an existing product, I can help. Let's build software that users love and products that stand the test of time.

🏆 Why work with me? I am a dedicated Mobile App Developer with over 12 years of experience building high-performing, user-friendly applications for both iOS and Android platforms. I don't just write code; I partner with my clients to understand their business goals and deliver apps that their users love. My goal is to get your product into the hands of users as quickly and cost-effectively as possible. * Fast Turnaround * Cost-Efficient * Consultative Approach * Reliable Support * AI Integration 💼 My core expertise includes: ✅ Native Development: Swift, Objective-C (iOS), Kotlin, Java (Android) ✅ Cross-Platform: React Native, Flutter ✅ Back-end & APIs: Firebase, RESTful APIs, Node.js ✅ UI/UX: Translating Figma/Adobe XD designs into pixel-perfect interfaces. ✅ AI Tools: Lovable, Cursor, Base44, Replit, etc. 📩 Key Services: ✅ Store Listing Optimization (SLO): Managing localized descriptions, screenshots, and metadata. ✅ Phased Rollouts: Implementing 1% ➔ 10% ➔ 100% release strategies to mitigate risks. ✅ Compliance Audits: Ensuring your app meets the latest GDPR, CCPA, and Platform Privacy requirements. ✅ Hotfix Coordination: Rapidly deploying critical patches when things go wrong. 🎯 Why should hire me? Whether you need a brand-new app built from scratch, a bug fixed, or an existing app scaled for growth, I can help. I pride myself on clean architecture, writing maintainable code, and keeping communication clear and transparent throughout the entire project lifecycle. 🚀 Let's discuss your project! Send me a message and we can explore how to bring your app vision to life."

Hi, I’m Krunal — a results-driven Mobile App Developer with 8+ years of experience building scalable, high-performance apps for startups and businesses. I’ve successfully delivered 80+ mobile apps across iOS, Android, and Flutter — helping clients go from idea → MVP → live product → scale. 🔥 What I Specialize In 📱 iOS Development (Swift, SwiftUI, Objective-C) 🤖 AI-Powered Apps (ChatGPT, OpenAI APIs, Dialogflow) 🚀 Flutter Cross-Platform Development ⚡ MVP Development for Startups 🎨 Clean UI/UX with High Retention Focus 🔗 API Integrations (Firebase, REST, Payment Gateways) 🤖 AI + No-Code / Vibe Coding Expertise I help clients build faster using modern tools and AI workflows: ⚡ Rapid prototyping using vibe coding approach 🧠 AI-assisted app flows using OpenAI API 🛠️ Building MVPs using tools like Lovable, FlutterFlow & hybrid stacks 🔄 Converting no-code prototypes into scalable production apps 👉 Perfect for founders who want to validate ideas quickly and cost-effectively. ⚙️ Performance & Optimization I don’t just build apps—I make them fast, scalable, and production-ready: - App Store & Play Store optimization (ASO basics included) - Smooth UI performance & memory optimization - Crash-free experience (Firebase Crashlytics integration) - Clean, maintainable architecture 🎯 Why Clients Choose Me ✅ Clear communication & fast response ✅ Pixel-perfect UI implementation ✅ Startup-friendly mindset (cost + speed optimized) ✅ Long-term support & scaling guidance 📞 Let’s Build Something Great Have an app idea? I can help you: ✔ Validate your idea ✔ Build your MVP fast ✔ Launch on App Store / Play Store ✔ Scale with AI & modern tech 👉 Your idea deserves more than just code—let’s turn it into something people love using.