Cross-Platform Media Gallery App -- 2

I already have the full UI/UX finished and ready to hand over; what I now need is the complete development of a media-only mobile app that launches on both the App Store and Google Play under my own developer accounts. Users will not register or log in—opening the app immediately shows the feed.

Core user experience
• The feed streams photos and videos exactly as designed.
• Each item can be Liked and shared; share must include the native share sheet plus direct shortcuts for WhatsApp Status and Instagram Story.

Admin experience
Through a simple web portal I can sign in as admin, upload new photos or videos, edit or remove existing items, and see them appear in the mobile feed in real time (or after a quick refresh). The portal should be responsive so I can use it from a phone or laptop.

Phase-two monetisation
After the first release is accepted by Apple and Google, you will add Google AdMob banners/interstitials and guide me through the extra approval step.

What I will supply
• All screen designs, assets, colours and typography tokens
• My Apple and Google developer credentials for store submission
• Test media to upload during QA

What I expect back
1. Source code for the iOS/Android app (React Native, Flutter or similar cross-platform stack—whichever you prefer as long as it matches the design pixel-perfectly).
2. Source code and live deployment of the admin portal (any modern web stack).
3. APIs and database schema powering the feed.
4. Store-ready builds, screenshots and successful approval on both stores.
5. A brief hand-off document covering environment setup, AdMob keys insertion and routine maintenance.

Acceptance is complete once the app is live and the portal is running on my server with every supplied design element faithfully reproduced.