Stopwatch and clock with giant digits
About this app
Sports stopwatch with:
• giant digits and adjustable theme (color, font, size, spacing, format)
• control with both on-screen buttons and volume buttons
• lap-timer
• delayed-start (with audio 3...2...1... countdown).
Free, small, no ads, open source (github.com/arpruss/simplestopwatch).
As a bonus, includes a giant number clock (swipe to switch between clock and stopwatch).
I made this so I could easily see the time while rock climbing at the gym 50 feet up. It's also useful poolside for swimming, and for other sports where you need to see the time from a distance (or close up, if you want).
Licensed under MIT, by arpruss.
What's New in v1.31
Imported from the F-Droid repository index.
Version history
Nov 8, 2021 · 0.2 MB · Android API 4–29 · code 31
Imported from the F-Droid repository index.
SHA-256 a3634375d4455dc6dbb8f5347970f7e0362d52bc3da1a92d4f4ecf7f13a18e1f
Aug 29, 2021 · 0.2 MB · Android API 4–29 · code 26
Imported from the F-Droid repository index.
SHA-256 b3ec1a5ec24ce53bf5c2322eaf79b00c52f021ed7a0ada9d58fae31dcffc83d2
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
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
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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 omegacentauri.mobi.simplestopwatch 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, 1.26 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Giant 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 Giant Stopwatch, and a listing is removed when the evidence for it stops holding up.
Get Giant Stopwatch
Every source we list for omegacentauri.mobi.simplestopwatch 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
a3634375d4455dc6dbb8f5347970f7e0362d52bc3da1a92d4f4ecf7f13a18e1f
Signing certificate
53f7c03751587546b5cff6b4e93dbae5f89a1be81e50b214cb710863fd3c94ce
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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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