Kapsula

Kapsula runs your HTML/JavaScript tools on Android and iOS. Turn code from an AI chat into a personal timer, checklist or habit tracker without building and publishing a separate app. Import an HTML file, paste code or add a URL. Compatible tools can use the Kapsula JavaScript bridge for scheduled local notifications, sound, vibration and persistent local storage. Notifications are scheduled with the operating system; delivery depends on permissions and device settings. File and pasted-code projects can work offline when they have no external dependencies. Kapsula requires no account and stores projects locally. URL projects and network requests made by your own code need an internet connection. Made for people who build small personal tools with AI, hobbyists and developers. HTML/JavaScript is the supported format; arbitrary source-code projects and server-side applications are not supported. Available free on the App Store and Google Play. Start with the included Shift demo or the documented focus-timer example at kapsula.app.