Cross-Platform CRM App Development

I’m building a practical utility app that must work flawlessly on both iOS and Android. The core concept is clear, but I need an experienced cross-platform developer to turn it into polished, store-ready binaries.

Key requirements are straightforward: secure user authentication, dependable push notifications, and full offline functionality with seamless background sync once a connection returns. Whether you prefer Flutter, React Native, or another modern framework, I’m fine as long as the final product meets Apple App Store and Google Play standards. Clean, well-commented code in a private Git repository is essential.

Deliverables
• Complete source code, with instructions to build and sign the iOS and Android apps
• Internal-testing builds (TestFlight and APK)
• A concise README explaining the offline data strategy, push setup, and any third-party services used

Acceptance criteria
• Users can register, sign in/out, and reset passwords securely
• Every critical feature remains usable in Airplane Mode and syncs correctly when online
• Push notifications arrive whether the app is foregrounded, backgrounded, or closed
• Both store submissions pass initial review without code changes

If this aligns with your expertise, please share relevant portfolio links and an estimated timeline so we can move forward quickly.