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... (Budget: €250 - €750 EUR, Jobs: Android, App Development, AWS Amplify, Cloud Computing, iOS, iPad, iPhone, Mobile App Development)