Asfand H.

Need to build an app, fix an AI-generated project, or get your application ready for launch? I'm a software developer with 7+ years of mobile app development experience and a Top Rated Plus badge on Upwork. I help startups, founders, and businesses build mobile apps, integrate backend services, fix technical issues, and turn prototypes into production-ready products. 🚀 WHAT I DO BEST 🤖 AI App Development & Vibe Code Rescue Built an app with Cursor, Claude, Lovable, or Bolt but struggling to finish it? I help turn AI-generated code into functional, reliable applications. ✅ Fix build errors, bugs, and broken features ✅ Complete unfinished AI-generated projects ✅ Integrate OpenAI and other AI APIs ✅ Resolve API, authentication, and database issues ✅ Improve code quality and app performance ✅ Prepare projects for testing and production 📱 iOS App Development ✅ Native iPhone and iPad apps using Swift, SwiftUI, UIKit, and Xcode ✅ Custom UI development and REST API integration ✅ Authentication, Firebase, databases, and push notifications ✅ Subscriptions and in-app purchases ✅ Bug fixing, crash resolution, and optimization ✅ TestFlight and App Store submission support 📲 Flutter App Development ✅ Cross-platform apps for iOS and Android ✅ Flutter, Dart, and FlutterFlow development ✅ Responsive UI and Figma-to-Flutter implementation ✅ Firebase, API integration, authentication, and notifications ✅ State management, debugging, and performance improvements ✅ App Store and Google Play release preparation ⚙️ BACKEND API & WEBSITE DEVELOPMENT ✅ REST API development and third-party integrations ✅ Backend connectivity, authentication, and databases ✅ Admin dashboards and user management ✅ Responsive websites and web applications ✅ AI-powered features and MVP development 💳 PAYMENTS & THIRD-PARTY INTEGRATIONS ✅ Stripe payment gateway integration ✅ RevenueCat subscription and entitlement management ✅ Apple In-App Purchases and subscription flows ✅ Firebase, AWS, and cloud services ✅ LiveKit real-time audio and video ✅ Google Maps and social login ✅ OpenAI, Claude, and other API integrations 📱 RECENT PROJECT EXPERIENCE ✅ AI App Development & ChatGPT Integration:AI-powered application features using OpenAI APIs and LLM integrations. ✅ Real-Time AI Voice Companion (iOS):Voice conversations powered by an LLM backend. ✅ AI App Debugging & Vibe Code Rescue: Fixing bugs, resolving build errors, and completing unfinished AI-generated applications. ✅ Crypto P2P Payment App: Payment application developed through a long-term client collaboration. ✅ Mobile App Audit & Completion Troubleshooting and feature completion for a US-based customer care application. ✅ GPS Tracking Apps: Location-tracking solutions for iOS and Android. 🛠️ TECHNICAL SKILLS iOS: Swift, SwiftUI, UIKit, Objective-C, Xcode Cross-platform: Flutter, Dart, FlutterFlow Backend: REST APIs, JSON, authentication Databases: Firebase, Cloud Firestore, Core Data, SwiftData, SQLite AI: Cursor, Claude, OpenAI API integration Tools: Git, GitHub, Postman, Figma 🚢 APP STORE & GOOGLE PLAY RELEASE SUPPORT ✅ App submission and release preparation ✅ Review rejection analysis and troubleshooting ✅ Fixing crashes, login issues, and purchase problems ✅ App Store Connect and Play Console configuration ✅ Production builds, version management, and maintenance 📋 HOW I WORK 1. Understand your goals, requirements, and existing codebase. 2. Plan the scope, priorities, and realistic timeline. 3. Develop features and integrate required services. 4. Test functionality, fix bugs, and check edge cases. 5. Prepare your app for handover, testing, or release. 💰 ENGAGEMENT & PROJECT PRICING I offer flexible hourly and fixed-price contracts based on your project scope and budget. Hourly contracts suit ongoing development, bug fixes, and maintenance, while fixed-price projects follow agreed milestones and deliverables. I provide transparent estimates, realistic timelines, and regular updates, with flexible availability across US and EU time zones. ⭐ WHY WORK WITH ME? ✅ Top Rated Plus freelancer on Upwork ✅ 7+ years of mobile app development experience ✅ Experience with new products and existing codebases ✅ Focus on reliable implementation and maintainable code ✅ Clear communication and a structured workflow 🚀 LET'S DISCUSS YOUR PROJECT Need an AI-powered app, a native iOS application, a Flutter solution, payment integration, or help rescuing an unfinished project? Send me a message with your idea or current project. Let's discuss the right approach and build a reliable product.