Cross-Platform Multimedia Productivity App

I need a single code-base mobile application that runs smoothly on both Android and iOS and functions primarily as a productivity tool. The core experience revolves around letting users capture, organise and review images or videos and then keep everything safely synchronised in the cloud. All user data must be stored online by default, and I want the upload, sync and retrieval flows to be guided by lightweight AI so the app can, for example, spot duplicates, suggest smart folders or propose reminders when content is left untouched for too long.

Key goals
• Native-like performance and a clean, distraction-free interface.
• Secure, background cloud sync for every asset, with end-to-end encryption.
• On-device AI models (or efficient server-side endpoints if size is a concern) to analyse images and videos for tagging, search and smart suggestions.
• A scalable back-end (Firebase, AWS Amplify or another equivalent you prefer) that can handle spikes in uploads.

Deliverables
1. Full source code for Android and iOS, structured so future modules can be added easily.
2. API or back-end setup scripts and clear environment documentation.
3. A brief test plan plus an APK/TestFlight build so I can validate performance on real devices.
4. One-page hand-off note summarising AI models used, cloud architecture and any third-party libraries.

Acceptance criteria
• First-run onboarding completes with permissions granted and the user is automatically logged into the cloud workspace.
• Image/video captured or imported appears in the main grid within five seconds over a standard 4G connection.
• Search by automatically generated tag returns correct results for at least 80 % of the sample set.
• App passes both Android and iOS store checks with no critical warnings.

I value clear communication and clean, well-commented code, so drop me a quick outline of the tech stack you’d pick and a rough milestone split, and we can kick things off right away.