Capsule — Documents that run like apps

Capsule packs your entire app — UI, data, and everything — into a single portable .capsule file. No cloud. No accounts. Just share it. 01 / PROMPT YOUR IDEA Describe what you need Describe the application, layout, or features you want to build. 02 / INSTANT CAPSULE APP Self-contained output Generates a complete single-file .capsule container with HTML UI, schema, and local SQLite data. 03 / ITERATE ON THE FLY Live AI updates Modify features, dark mode, or schemas on the fly via direct AI prompts or MCP coding tools. Choose an AI assistant below to start building your app. 01 / PORTABILITY What If an App Was Just a Document? Forget cloud accounts, servers, and subscriptions. Capsule bundles your user interface, media assets, and local database into a single, portable .capsule file. Send it via WhatsApp, AirDrop, or email just like a PDF or Word document. When the recipient taps the file, it launches instantly with all your data preloaded, ready to use. 💬Share Apps in ChatSend interactive trackers, portfolios, or tools in standard message threads. Tapping open works immediately. 🎨Zero Vendor Lock-inCapsules use standard HTML and CSS. Your code and data belong to you, entirely free of cloud silos. 02 / PRIVACY FIRST 100% Private by Design Capsule keeps your personal data where it belongs, on your device. Everything you create is saved directly into the file, giving you complete ownership with zero cloud servers. Write tasks, list recipe notes, or save project logs. There is no cloud storage, no account registration, and no network requirement. Everything is secured right inside the file. 🔒Offline-First StorageWorks 100% offline. Access your apps on a plane, on the subway, or completely disconnected. 🔑Secure Local VaultData stays safely packed inside the single file. Absolute protection from server breaches. 03 / CROSS-PLATFORM One File, Every Operating System Capsule files are completely cross-platform by default. Open the exact same file on macOS, Windows, or Linux without conversion or special setup. Your apps launch with full desktop performance on any computer, with native iOS and Android support coming soon. ⚡Instant Desktop LaunchLaunches seamlessly on macOS, Windows, and Linux with zero setup or configuration. 📱Mobile Support Coming SoonOpen and run the exact same .capsule files on iOS and Android devices. GET CAPSULEReady to run portable apps? Capsule is completely free. Download the host player for your platform and open any .capsule file in seconds. Desktop macOS macOS 12 Monterey or later Windows Windows 10 or later (64-bit) Linux Ubuntu / Debian / Fedora Web Web Runs in your browser for a quick preview. Cannot open or save files directly on your computer. Mobile (Coming Soon) iOS iOS 16 or later App Store Android Android 9 or later Google Play