Atul Tiwaree - React Native Developer India | Fix iOS/Android Build Errors & Crashes Fast

React Native Development Services

iOS App Store & Google Play Store rejection fixes and submission support
iOS & Android build failures, Xcode errors, Gradle issues, and native module linking
Memory leaks, ANR (Application Not Responding), and performance bottleneck fixes
Native bridge development - Custom native modules in Swift, Objective-C, Java, and Kotlin
Complex animations with React Native Reanimated 2/3 and Skia for 60fps performance
Offline-first architecture with SQLite, WatermelonDB, and background sync
Video/audio processing with FFmpeg - trimming, compression, filters, and format conversion
Deep linking, universal links, and custom URL scheme implementation
Biometric authentication (Face ID, Touch ID, fingerprint) with secure keychain storage
WebRTC integration for video calling, screen sharing, and real-time peer-to-peer communication
Background tasks - location tracking, audio playback, and silent push notifications
Payment gateway integration (Razorpay, Stripe, PayTM, PhonePe) with PCI compliance
Live streaming (RTMP/HLS) with ZEGOCLOUD, Agora, or custom streaming solutions
AI/ML integration - ChatGPT API, on-device TensorFlow Lite, image recognition, and OCR
Bluetooth Low Energy (BLE) and IoT device communication
In-app purchases (IAP), subscriptions, and App Store/Play Store billing
Code push and over-the-air (OTA) updates with EAS Updates and CodePush
React Native Fabric (New Architecture) migration and TurboModules implementation
Large list optimization with FlashList, pagination, and infinite scroll
Camera integration - QR/barcode scanning, filters, AR effects, and video recording
Maps integration - Google Maps, Mapbox with clustering, custom markers, and geofencing
File system management - downloads, uploads, caching, and compression
Redux/MobX state management, Redux Saga/Thunk, and Tanstack Query optimization
Real-time features with Socket.io, WebSocket, and Firebase Realtime Database
Push notifications (FCM, APNs, Notifee) with custom sounds, badges, and actions
App security - SSL pinning, jailbreak detection, root detection, and code obfuscation
Monorepo setup with Nx, Turborepo for multi-app React Native projects
CI/CD pipeline setup - Fastlane, GitHub Actions, Bitrise for automated builds and deployments

Real Results Delivered

Custom Dynamic Linking System

Replaced deprecated Firebase Dynamic Links with zero-cost custom solution, achieving 15% uplift in campaign conversion and eliminating third-party dependencies for a creator monetization platform.

FFmpeg iOS Build Fix

Published open-source solution fixing ffmpeg-kit-react-native iOS build issues after official retirement, helping 500+ developers resolve critical production blockers.

Live Streaming Platform

Built complete React Native app with live streaming, subscriptions, real-time chat, and push notifications serving 5,000+ active users on both iOS and Android.

Production Fixes & Projects Delivered

Fixed ffmpeg-kit-react-native on iOS after official retirement
Built FFmpeg Kit for Android with 16KB page size support
Replaced Firebase Dynamic Links with zero-cost custom solution (15% conversion uplift)
Developed AI-powered mental health app (Therepeia) with ChatGPT integration
Built live streaming platform with ZEGOCLOUD SDK for 5,000+ users
Created AI document search using MiniLM embeddings and vector databases
Developed NPM package (ServerSetup) improving dev efficiency by 25%
Built student exchange app (ShareClub) connecting college communities
Created Neffex Music Player with curated workout playlists (25% engagement boost)
Integrated real-time chat, push notifications, and audio/video calling
Resolved iOS build & App Store submission failures
Fixed Android release-only crashes and build issues
Debugged payment SDK crashes and callback issues

Read technical articles on Medium (500+ developers helped)

View open source code on GitHub

Connect on LinkedIn

What Clients Say

"Our app was rejected by Apple three times. Atul fixed the build issue in 36 hours and we got approved on the next submission. Saved our launch timeline."

Priya S.

Founder, EdTech Startup

"Android app was crashing only in release builds. Atul debugged it remotely and fixed it the same day. No unnecessary meetings, just clear communication and fast delivery."

Rahul M.

CTO, FinTech App

"Needed AI chat feature in our React Native app. Atul delivered a working prototype in 48 hours and integrated it seamlessly. Exactly what we needed."

Amit K.

Product Manager, SaaS Company

About Atul Tiwaree - React Native Expert

I'm Atul Tiwaree, a full-stack mobile developer specializing in React Native with 2.6+ years of professional experience. I've built and maintained production apps serving 5,000+ users, published open-source solutions helping 500+ developers, and delivered fast, reliable fixes for startups across India.

My expertise spans the complete React Native ecosystem: JavaScript, TypeScript, Node.js, Express.js, MongoDB, Redux, Tanstack Query, Socket.io, Firebase, AWS, EAS Updates, and both Expo bare workflow and vanilla React Native. I've worked with companies like Fahdu (creator monetization platform), Morix AI (AI-powered document search), and Ginie Digital.

I focus on solving real production problems - not just theoretical coding. Whether your app is crashing, rejected by app stores, or needs urgent feature integration, I provide hands-on expertise with clear communication, fixed pricing, and fast delivery. Most issues are resolved within 24-72 hours.

Certifications: JavaScript Algorithms and Data Structures (freeCodeCamp), FFmpeg in React Native (Udemy)

Education: Master of Computer Applications (MCA) from Chandigarh Group of Colleges

📍 Based in Gurugram, Haryana | Serving clients across India

Transparent Pricing

Bug fixes & crashes: starting ₹5,000
Build failures & store rejections: starting ₹8,000
Payment SDK integrations: starting ₹12,000
AI features & chatbot integration: starting ₹25,000
Custom feature development: starting ₹30,000
Emergency fixes (24-48h delivery): 50% premium

All prices are fixed quotes based on scope. You know the exact cost before work begins. No hourly rates, no surprises.

Frequently Asked Questions

How quickly can you fix my React Native app?

Most bug fixes and build errors are resolved within 24-72 hours. Emergency fixes with critical production issues can be delivered in 24-48 hours with priority support. I provide a clear timeline after reviewing your specific issue.

Do you work with React Native apps on both iOS and Android?

Yes, I specialize in both iOS and Android platforms. I've shipped apps to both App Store and Play Store, handling everything from Xcode build errors and Gradle issues to platform-specific crashes and performance optimization.

What if my app was rejected by the App Store or Play Store?

I've helped multiple clients resolve app store rejections. I analyze the rejection reason, fix the underlying technical or policy issue, and ensure compliance with App Store and Play Store guidelines for successful resubmission. Average turnaround: 36-48 hours.

Can you add AI features to my existing React Native app?

Yes, I integrate AI chatbots, document search, PDF Q&A systems using ChatGPT, and other AI-powered features into React Native apps. I've built production AI apps like Therepeia (AI psychologist) and document search systems using MiniLM embeddings and vector databases.

How do you charge for React Native development work?

I provide fixed-price quotes based on the scope of work. Bug fixes start at ₹5,000, build failures at ₹8,000, and AI features at ₹25,000. You receive a clear quote with timeline before any work begins - no hourly rates, no hidden costs, no surprises.

Do you work with Expo and bare React Native workflow?

Yes, I work with both. I have extensive experience with Expo bare workflow, EAS Updates (OTA), and vanilla React Native. I can help migrate between workflows or optimize your existing setup.

What areas of India do you serve?

I'm based in Gurugram (Delhi NCR) but work with clients across India including Bangalore, Mumbai, Pune, Hyderabad, Chennai, and other cities. All work is done remotely with clear communication via WhatsApp, email, and video calls as needed.

Get in Touch - React Native Consultant

Need help with your React Native app? Contact me for a free consultation and fixed-price quote. Average response time: 2 hours.

Quick Contact

📱 WhatsApp: +91 7408407403 (Primary)
📱 WhatsApp: +91 8957048630 (Backup)
💼 LinkedIn: atultiwaree
💻 GitHub: @atultiwaree
📝 Medium: @atultiwaree

Send a Message

I'll respond within 2 hours with next steps and a quote.

React Native Developer in India - I Fix Broken Apps Fast

Technologies I Work With