Build MVP Multi-Channel AI Chat Runtime with Prompt Modes, File Upload, Correction Log, and Export

I need a developer to build a simple custom AI chat runtime. This is not a generic chatbot project and not a no-code app-builder project. I need to own the code and be able to edit prompts/modes myself... (Budget: $15 - $25 USD, Jobs: AI Chatbot Development, AI Development, AI Model Development, iPhone, Java, Mobile App Development, Objective C, Supabase)