Cross-Platform Social Content Manager

I need a single app that runs natively on both iOS and Android and blends the best parts of Home Ai, WhatsApp Status Saver, and Post Bridge. The core aim is social media interaction, with a heavy focus on posting and managing multimedia content... (Budget: $250 - $750 USD, Jobs: Flutter, Graphic Design, iOS Development, iPhone, Mobile App Development, React Native, UI / User Interface, User Interface / IA)