After months of building, I just shipped Thinkora — an all-in-one productivity app for Android. Here's the technical breakdown of what I built, the stack I chose, and the lessons I learned along the way. The Problem I was juggling 5 different apps to stay organized: Notion for notes Todoist for tasks CamScanner for documents Forest for focus Google Keep for quick notes Each app did one thing well, but nothing was integrated. And worse — most of them broke the moment I lost internet. So I built Thinkora : one offline-first app that does it all. What's Inside 📝 Rich notes with sketches, voice memos, and attachments ✅ Tasks with AI-generated subtasks 📷 Document scanner with OCR in 5 languages 📅 Time blocking with a draggable daily timeline ☁️ Cloud sync across devices 🍅 Pomodoro timer + habit tracker + mood journal 🤖 Built-in AI assistant (no API key required) The Stack Layer Choice Why Framework React Native 0.81 Single codebase, fast iteration Storage WatermelonDB Offline-first, JSI-powered SQLite…