Offline world clock with a home-screen widget and time-zone converter.
About this app
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.
Licensed under GPL-3.0-or-later, by haykh.
What's New in v1.1.2
Imported from the F-Droid repository index.
Version history
Jul 5, 2026 · 8.6 MB · Android API 26–35 · code 4
Imported from the F-Droid repository index.
SHA-256 40d6687c0f51afbe569ad7b55075504b3f1f50b8d20cd70a8c515bef5fb49890
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be io.github.haykh.zham is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
No earlier build is on record for Zham, so there is nothing to roll back to yet. When a second version is published, this section will explain how to move between them safely.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Zham, and a listing is removed when the evidence for it stops holding up.
Get Zham
Every source we list for io.github.haykh.zham is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
40d6687c0f51afbe569ad7b55075504b3f1f50b8d20cd70a8c515bef5fb49890
Signing certificate
9db83c91e82394772ef3d776bb303b26af12d98d6a48876babdb025086867b30
Permissions Required
What each permission lets Zham do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
No earlier build is on record — this is the first release we have listed.
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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