A date and calendaring tool for Android
About this app
Do you need to convert between a week number and a date or require some information about a date? Find out if a year is a leap year, calculate the number of days, business days, weeks, weekends, month turns and years between two dates? Want to add or subtract days, weeks or months to a given date?
With TKWeek, it‘s no hassle. Even a basic calendar view is at your fingertips. You can use it to flag days off. Just tap and hold until the color changes. And with My Day you see what is up on a particular day.
Curious to know when Friday 13th takes place? TKWeek will tell you. The app has many national and international public holidays built in, for example Reformation Day, St. Martin's Day, Christmas, Good Friday, Seven Sleepers Day, Pentecost, Ash Wednesday, and Easter. Some of the other special days TKWeek knows: Ice Saints, Valentine's Day, Mother's Day, Halloween, St. Patrick's Day, Earth Day, All Saints. And there are so many more included.
Licensed under MIT, by Thomas Künneth.
What's New in v2.3.4
Imported from the F-Droid repository index.
- - Fixed a crash on startup
Version history
May 14, 2026 · 4.2 MB · Android API 24–36 · code 23401
Imported from the F-Droid repository index.
- - Fixed a crash on startup
SHA-256 76340dbd15ffc79e1f612b3aa5c7ce65c24338774d1b08f87ef4e169d3437d68
May 11, 2026 · 4.2 MB · Android API 24–36 · code 23301
Imported from the F-Droid repository index.
SHA-256 a6f73132ae740305dd6dbc6c876203792789c5aa3ec6b33c2197e92a0f7f929a
Jan 6, 2026 · 4.9 MB · Android API 24–36 · code 23101
Imported from the F-Droid repository index.
- - First version for F-Droid
- - Removed INTERNET permission
- - Library and tools upgrades
SHA-256 52ee682566be61d82176eb7567a12e53af3ade9e5d92fef9c84d17ab2348006a
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.thomaskuenneth.tkweek 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, 2.3.3 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall TKWeek 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 TKWeek, and a listing is removed when the evidence for it stops holding up.
Get TKWeek
Every source we list for com.thomaskuenneth.tkweek 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
76340dbd15ffc79e1f612b3aa5c7ce65c24338774d1b08f87ef4e169d3437d68
Signing certificate
7d6bd0ed4e9e4a1e6e3da0cc2d783a25f721a3961c7da315536c4519d85545b2
Permissions Required
What each permission lets TKWeek 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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