Tools · Open source
Zham
haykh
Offline world clock with a home-screen widget and time-zone converter.
Opens the official F-Droid page
About Zham
Zham is a clean, fast world clock — see the time across the world, on your home screen, with a built-in time-zone converter.
Features:
* World clock — track the current time in as many cities as you like, with live seconds and country flags.
* Easy to manage — search 600+ time zones to add a city, swipe to delete, drag to reorder.
* Time converter — scrub a time and date to see the matching moment everywhere at once; pick any city as the reference and spot day rollovers at a glance (+1d / -1d).
* Make it yours — Light / Dark / System theme and any accent color, via a colour wheel.
* Home-screen widget — resizable, scrollable, matches your theme, and self-updates every minute.
* Flexible format — 12-hour / 24-hour presets, or your own custom pattern.
Zham runs entirely offline: no accounts, no network access, no tracking. Your cities and settings never leave your device.
How to install Zham
- Tap Download — the app's official page on F-Droid opens.
- Install it with the F-Droid app (recommended, for automatic updates), or use the download button on that page.
- If Android asks, allow the F-Droid app or your browser to install apps, then tap Install.
- Open Zham from your app drawer.


