Kashish K.

Need expert Mobile App Development for a new app, MVP, or AI prototype? Or want to improve your existing iOS or Android app? I’m Kashish, a Top Rated Senior Mobile App Developer with 8+ years of experience, specializing in Flutter and React Native. I provide end-to-end Android App Development, iOS Development, and AI Mobile App Development, taking your idea from MVP to App Store and Google Play launch. I build scalable mobile applications using Flutter, Dart, React Native, Expo, JavaScript, TypeScript, Swift, SwiftUI, and Kotlin. Whether you need a Flutter Developer for Flutter Mobile App Development, React Native Development, or Native App Development, I deliver reliable Cross-Platform App Development solutions for your business. With $100K+ earned and 140+ client feedback entries on Upwork, I deliver clean code, great user experiences, and scalable solutions aligned with your goals. MOBILE APP DEVELOPMENT SERVICES • Flutter App Development: Custom iOS and Android applications • React Native Development: Modern applications using React Native and Expo • Native App Development: Platform-specific solutions using Swift, SwiftUI, and Kotlin • AI Mobile App Development: Intelligent mobile solutions with OpenAI API and ChatGPT Integration • AI App Development: AI-powered features, chatbots, and automation • MVP Development: Scalable MVPs for startups and growing businesses • API Integration: REST APIs, third-party services, and backend connectivity • Firebase & Supabase: Authentication, databases, notifications, and real-time features • Node.js: Backend development and server-side integrations • Mobile App Design: Intuitive interfaces and user-friendly experiences • In-App Purchases: Subscription systems and payment functionality • App Store Deployment & Google Play Deployment: Complete publishing and launch support • App Maintenance: Bug fixing, performance optimization, and ongoing improvements HOW I CAN HELP • Build a new mobile app from your requirements • Develop or integrate REST APIs and backend services • Set up Firebase or Supabase authentication, databases, and notifications • Implement real-time chat, location services, and payment flows • Integrate subscriptions and in-app purchases • Fix bugs, improve performance, and modernize existing apps • Prepare builds and support App Store and Google Play publishing RELEVANT PROJECT EXPERIENCE • Women’s safety app (Flutter, Firebase): one-tap SOS, live location sharing, emergency messaging, and real-time alerts • Dating app (React Native, NestJS, MongoDB, Firebase): real-time chat and an admin panel, delivered within the agreed timeline and budget • School check-in and check-out app (Flutter): student attendance and parent pickup tracking • Facility maintenance app for banks and credit unions (React Native): targeted maintenance reminders for branch assets Also built: a deal-sharing marketplace, social media platforms, a real estate rental app, fitness and nutrition, live video calling, and booking applications. TECHNOLOGY STACK • Mobile Development: Flutter, Dart, React Native, Expo, Swift, SwiftUI, Kotlin, TypeScript • Backend & Database: Node.js, REST APIs, Firebase, Supabase, MongoDB • AI & Integrations: OpenAI API, ChatGPT, AI chatbots, third-party integrations • Mobile Features: Push notifications, authentication, real-time chat, payment gateways, and subscriptions LET’S DISCUSS YOUR APP Send me a short description of your idea, the key features, your target platforms, and your expected timeline. I’ll review the requirements and suggest a practical development plan. FREE INITIAL CONSULTATION Let’s discuss your app, identify the right technology, and map out the next steps. Your initial consultation is free.