I’m building a utility-focused mobile application and want it launched simultaneously on iOS and Android through a single Flutter code-base. The core scope covers two must-have capabilities: real-time push notifications and reliable background data synchronization. please share your already build apps urls in order to make me confident that you can do that task ! The job involves: • Setting up a clean, well-structured Flutter project (Dart 3, latest stable Flutter SDK). • Implementing Firebase Cloud Messaging—or a comparable service if you prefer—to deliver push notifications even when the app is closed. • Creating a robust data-sync layer that can pull and push JSON data to a REST endpoint, handle connectivity changes gracefully, and queue updates for later when offline. • Producing release-ready builds for both App Store and Google Play, including all necessary signing, provisioning, and store-compliant icons/screenshots. • Handing over thoroughly commented source code, a brief README covering build steps, and short Loom/Screencast clips that demonstrate notification flow and sync in action. Acceptance criteria 1. A single Flutter repository with reproducible builds for iOS (.ipa) and Android (.apk/.aab). 2. Test push notification received on both platforms within 5 seconds of trigger. 3. Data created offline syncs automatically once connection resumes, without data loss. 4. All public Flutter Analyze and Flutter Test checks pass with no errors. Let me know your proposed timeline, any relevant apps you’ve shipped in Flutter, and which notification/sync libraries you prefer so we can lock in the tech stack quickly.