Quick shortcut for setting alarms based on your preferred amount of sleep.
About this app
Warpclock provides a quick shortcut for setting alarms based on your preferred amount of sleep. No more mental math before bed - after a single button press, your head can hit the pillow and you will warp forwards in time with minimal interruption.
How to use
When you open Warpclock for the first time, you should configure your preferred amount of sleep using the in-app controls. There are buttons to increase and decrease the amount by 1 hour, 10 minutes, and 1 minute. You only need to set this once.
There is also a button labeled "Set alarm" inside the app. Pressing this button will create a new one-shot alarm in your default alarm clock app, configured to wake you up after your personalized amount of time has passed. The alarm will automatically delete itself from your alarm app once it has triggered, keeping your list of saved alarms clean.
Once the alarm is created, you'll get two toast notifications. The first notification is from Warpclock, displaying the time that the new alarm should go off. The second notification comes from the system alarm clock, confirming that it was created sucessfully and displaying how far in the future the alarm will occur.
The app also exposes a widget that you can add to your homescreen for even faster access.
In the default launcher, just long-press on your homescreen background and drag the "Warpclock" widget to a location on your homescreen, and drag the edges to resize as desired. Tapping on the widget text will create a new alarm just as if you'd pressed the "Set alarm" button in the app. You'll get the same two toast notifications as well.
The alarm is created in your default alarm clock app, so you should use that to configure the default alarm sound and vibration settings. Once an alarm is created, if the trigger time needs to be adjusted, that should also be done in the default alarm clock app.
Current limitations This app currently does not handle Daylight Savings Time changes, it simply adds the configured amount and rolls over at 24 hours. You'll need to manually fix a couple of alarms per year if you live in a region that still changes the time back and forth.
Licensed under GPL-3.0-only, by Anton Lazarev.
What's New in v1.2
Imported from the F-Droid repository index.
- Fixed an uncommon crash when setting an alarm due to the missing WAKE_LOCK permission.
Version history
Oct 9, 2022 · 2.5 MB · Android API 15–30 · code 3
Imported from the F-Droid repository index.
- Fixed an uncommon crash when setting an alarm due to the missing WAKE_LOCK permission.
SHA-256 6e7ed2d20672ab5c955bcf9a57d7a50da9dfef54ea3a2dd86386efe61ad69852
Jan 7, 2022 · 2.5 MB · Android API 15–30 · code 2
Imported from the F-Droid repository index.
- You can now customize your preferred amount of sleep inside the app! The in-app "Set Alarm" button and launcher widget will both use the modified configuration.
- The unused WAKE_LOCK app permission was also removed.
SHA-256 3bb8a2cee2733ee82087fadc8f8310e78cec6267f11d6df646e8f8a216282ebb
Dec 5, 2021 · 1.9 MB · Android API 15–29 · code 1
Imported from the F-Droid repository index.
- Initial release.
SHA-256 83ee63c51d911ae5bd93d0fde867b1b979a168a912545292ec72d24b167c3f87
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 com.antonok.warpclock 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 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Warpclock 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 Warpclock, and a listing is removed when the evidence for it stops holding up.
Get Warpclock
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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
6e7ed2d20672ab5c955bcf9a57d7a50da9dfef54ea3a2dd86386efe61ad69852
Signing certificate
66140984845b9955f9a28931681dacf9d13d2e74cdfc46a8a5f300285f02eeff
Permissions Required
What each permission lets Warpclock do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
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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