Show HN: Capsule – Single-file web apps that save their data into SQLite

Sep 15, 2026 08:31 PM - 2 hours ago 1

Capsule packs your full app — UI, data, and everything — into a azygous portable .capsule file. No cloud. No accounts. Just stock it.

01 / PROMPT YOUR IDEA

Describe what you need

Describe the application, layout, aliases features you want to build.

02 / INSTANT CAPSULE APP

Self-contained output

Generates a complete single-file .capsule instrumentality pinch HTML UI, schema, and local SQLite data.

03 / ITERATE ON THE FLY

Live AI updates

Modify features, acheronian mode, aliases schemas connected the alert via nonstop AI prompts aliases MCP coding tools.

Choose an AI adjunct beneath to commencement building your app.

01 / PORTABILITY

What If an App Was Just a Document?

Forget unreality accounts, servers, and subscriptions. Capsule bundles your personification interface, media assets, and section database into a single, portable .capsule file.

Send it via WhatsApp, AirDrop, aliases email conscionable for illustration a PDF aliases Word document. When the recipient taps the file, it launches instantly pinch each your information preloaded, fresh to use.

💬

Share Apps successful Chat

Send interactive trackers, portfolios, aliases devices successful modular connection threads. Tapping unfastened useful immediately.

🎨

Zero Vendor Lock-in

Capsules usage modular HTML and CSS. Your codification and information beryllium to you, wholly free of unreality silos.

02 / PRIVACY FIRST

100% Private by Design

Capsule keeps your individual information wherever it belongs, connected your device. Everything you create is saved straight into the file, giving you complete ownership pinch zero unreality servers.

Write tasks, database look notes, aliases prevention task logs. There is nary unreality storage, nary account registration, and nary web requirement. Everything is secured correct wrong the file.

🔒

Offline-First Storage

Works 100% offline. Access your apps connected a plane, connected the subway, aliases completely disconnected.

🔑

Secure Local Vault

Data stays safely packed wrong the azygous file. Absolute protection from server breaches.

03 / CROSS-PLATFORM

One File, Every Operating System

Capsule files are wholly cross-platform by default. Open the nonstop aforesaid record connected macOS, Windows, aliases Linux without conversion aliases typical setup.

Your apps motorboat pinch afloat desktop capacity connected immoderate computer, pinch autochthonal iOS and Android support coming soon.

⚡

Instant Desktop Launch

Launches seamlessly connected macOS, Windows, and Linux pinch zero setup aliases configuration.

📱

Mobile Support Coming Soon

Open and tally the nonstop aforesaid .capsule files connected iOS and Android devices.

GET CAPSULE