PostAI – AI Social Media Caption Generator & Content Creator Flutter App (Android & iOS)

PostAI — AI-Powered Social Media Content Creator

PostAI is a complete Flutter mobile app that uses AI (OpenAI GPT-4o & Google Gemini) to generate social media captions, viral hooks, hashtag research, content repurposing, A/B testing, brand voice training, and content calendar management — all optimized per platform.

Built with clean architecture, Riverpod state management, Firebase backend, and ready-to-publish monetization (RevenueCat + AdMob). Just add your API keys and launch.

Download Demo APK

Key Features

AI Caption Generator — Generate platform-optimized captions for Instagram, TikTok, LinkedIn, and Twitter/X. Choose tone, content type, and niche. Multiple captions per generation.
Viral Hook Writer — 5 scroll-st