Stopwatch in the Material You theme, designed for ease of use and best features
About this app
Android stopwatch app in the Material You theme, designed for ease of use and best features
► New Stopwatch Settings • Enable Auto Start 3 seconds after app launch with override option • Enable vibration for better tactile sensation • Select action when you tap on the clock
► Circular progress • Displays the progress of the current lap based on the very first one • A dash on the lap progress shows the previous lap
► Change theme, new themes are available • Dynamic theme is only available with android 12+ • Extra Dark theme saves charging for Amoled screen
► Change orientation • Portrait mode has more space for laps • In Landscape mode, time text is larger
► Select an action when you tap on the clock that shows the time • Resume or pause • Resume or add lap • Resume or pause • If you don't want to do this, you can remove the action
► Switching notifications on/off • Stopwatch control in notifications • When switched off, the stopwatch works on ViewModel and DataStore • When enabled, the stopwatch works on LifecycleService and ForegroundService
► Screen Awake mode • Ability to watch the stopwatch without the screen falling asleep
Licensed under Apache-2.0.
What's New in v1.9.1
Imported from the F-Droid repository index.
Version history
Jun 27, 2026 · 1.4 MB · Android API 26–37 · code 1009011
Imported from the F-Droid repository index.
SHA-256 dbf937ebbe7c0b3d24c07fa0ede7cb53ea117f7071db3b61f1c96b7d257cda55
Jul 1, 2025 · 1.1 MB · Android API 26–35 · code 1008031
Imported from the F-Droid repository index.
- The dev lost the signing key, you will have to un- & re-install to update from 1.8.2 or below. F-Droid & IzzyOnDroid have verified to their best abilities this change should be legit, see https://github.com/JustDeax/ComposeStopwatch/issues/4
- Find the dev's notes at https://justdeax.github.io/ComposeStopwatch/key-rotation
- - Added settings dialog, more settings!
- - Added vibration enable
- - Added autostart enable
- - Added themed icon
SHA-256 3210477e9ecf8721572c563aff53c89df0e1c4fdb8fe3785993d2fbd69a54b36
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 com.justdeax.composeStopwatch 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
If the current release misbehaves, 1.8.3 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Compose Stopwatch first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
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 Compose Stopwatch, and a listing is removed when the evidence for it stops holding up.
Get Compose Stopwatch
Every source we list for com.justdeax.composeStopwatch 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
dbf937ebbe7c0b3d24c07fa0ede7cb53ea117f7071db3b61f1c96b7d257cda55
Signing certificate
6b2ab59a567e5e05d5a3d56366bd5ae0d12a11ee2e1046d54d149bfa5343d2e0
Permissions Required
Previous Versions
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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