Multi-Platform Ionic Productivity App

I already run a productivity-focused web application and now need the very same experience delivered as a modern Ionic app for both iOS and Android. Every feature that exists on the site—task creation and tracking, calendar views, real-time push notifications, user settings and data sync—should carry over seamlessly so users can switch between web and mobile without noticing a difference.

The core build must include task management screens, deep calendar integration (native device calendar read/write), and reliable Firebase or OneSignal push notifications. Smooth offline handling, responsive layouts, and secure login (OAuth currently used on the site) are also part of the scope.

I will provide the current web codebase, REST/GraphQL endpoints, and UI guidelines. You will return:

• Complete Ionic source code, clearly organised and commented
• Release-ready builds for iOS (App Store) and Android (Google Play)
• A brief README detailing environment setup, build commands, and any third-party services configured

Acceptance criteria: all primary website features replicated, no critical bugs, successful test flight on iOS and internal testing on Android, and approval of final build via my TestFlight/Google Play Console accounts.

If you are comfortable with Ionic/Capacitor, TypeScript and integrating calendar and notification APIs, I look forward to working together.