Welcome to Capsul
Capsul is an AI-powered app builder that turns plain-English descriptions into fully working single-file web apps and native mobile apps — complete with a real SQLite database, live preview, one-click deploy, and instant mobile access via QR code.
What makes Capsul different?
Real Database Per App
Every generated app gets its own persistent SQLite database. No fake localStorage hacks — actual SQL queries that survive page refreshes.
Instant Mobile App
Every web app works natively in the Capsul mobile app. Users scan a QR code — no App Store submission, no build process, no $99 Apple fee.
Bring Your Own AI Key
Your Groq, OpenRouter, or NVIDIA NIM key. Keys are AES-256 encrypted at rest. You control the model and the cost — that's why it's free forever.
AI Inside Generated Apps
Generated apps can call AI at runtime via CapsulAI. Build recipe generators, content tools, chat assistants — all without a backend.
Download & Self-Host
Export any app as a self-contained ZIP with a bundled SQLite server. Runs offline. Own your code — no vendor lock-in.
Version History
Every generation is checkpointed. Browse the last 5 versions and restore any of them with one click.
Where to start
Enjoying Capsul?
Capsul is free and self-hosted. If it saves you time or money, consider supporting the VPS hosting costs.