Social media posting android app,, APK

I'm looking for an experienced Android developer to build a simple but powerful content posting app for a phone farm. The goal is to manage around 20–30 different social media workspaces/accounts from multiple Android phones. I want the app to import videos from Google Drive (or Google Sheets), download the correct video, load the correct caption and hashtags, assign the content to the correct account, and guide the posting process on TikTok, Instagram, Facebook, YouTube Shorts, and other platforms. The app should have a clean, modern, dark interface with a queue, account manager, analytics, scheduling, and the ability to track which videos have been posted, failed, or are still waiting. The workflow should be designed to help organize and publish content efficiently while respecting each platform's capabilities and policies. If you've built Android automation, productivity tools, or multi-account management apps before, please include examples, your estimated timeline, and a fixed-price quote. Message me the word paper of you can help me out