The simplest interval timer you can imagine
About this app
An interval timer designed for HIIT workouts. Set your active and rest time, and hit go. Simple and easy-to-use.
Licensed under MIT, by Matthew Nienow.
What's New in v1.2.0
Imported from the F-Droid repository index.
- Add setting for number of sets. Add Spanish translations.
Version history
Sep 13, 2025 · 4.5 MB · Android API 24–35 · code 14
Imported from the F-Droid repository index.
- Add setting for number of sets. Add Spanish translations.
SHA-256 7cb61e6d9d81b713b38478334d942cf2a9fd0826df43924bad9348500f9396a8
Apr 17, 2025 · 4.3 MB · Android API 24–35 · code 13
Imported from the F-Droid repository index.
- Allow the timer to continue running when the app is in the background
SHA-256 7b647753559d8dbe8b63e09165c7d6e9ba53344844920fe18c93f28d12008be6
Oct 20, 2024 · 3.9 MB · Android API 24–34 · code 11
Imported from the F-Droid repository index.
- Fix minor bugs when using 0 as active or rest times
SHA-256 7d11177675beb46ccf1bfa12b2d403fc53e1fe5d7c82859262a420a1a647c82a
Will it run on your device?
78%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
- 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 dev.randombits.intervaltimer 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, 1.1.3 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Interval Timer 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 Interval Timer, and a listing is removed when the evidence for it stops holding up.
Get Interval Timer
Every source we list for dev.randombits.intervaltimer 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
7cb61e6d9d81b713b38478334d942cf2a9fd0826df43924bad9348500f9396a8
Signing certificate
046e269cfdb4816b4ef3d554a63de6be063e40228b524c04397d3b04315eaccd
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.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.