Solve Crosswords defined by Regex rules!
About this app
Solve crosswords by matching regex rules! These are grouped by difficulty and get increasingly harder to solve.
Will you be able to solve all of them?
- Get to be a regex expert - Crosswords re-invented - Free and without any ads
This app is open source: https://gitlab.com/carstenhag/regex-crossword-kotlin
Got some improvement ideas? Either submit an issue on the Gitlab project or send me a mail: regex-crossword@chagemann.de
Licensed under Apache-2.0, by Carsten Hagemann Apps.
What's New in v2.5.6
Imported from the F-Droid repository index.
- Fix the app not being able to load properly.
Version history
Sep 12, 2023 · 2.3 MB · Android API 21–34 · code 33
Imported from the F-Droid repository index.
- Fix the app not being able to load properly.
SHA-256 4fce8f8ea5d5e8cc03e53307deb04cee3eca32ce5ff99aa59903621780b45830
Sep 1, 2023 · 2.3 MB · Android API 21–34 · code 30
Imported from the F-Droid repository index.
SHA-256 6c7cab74297da19c8c97bd08053f159c06043b789dcbb37e18c7a8a6b7a2343f
Apr 11, 2021 · 1.9 MB · Android API 21–30 · code 29
Imported from the F-Droid repository index.
SHA-256 bf34b80bb1cab010427045526ac7166d3b6247a6fb9e5488be3445829c7ac902
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
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 de.chagemann.regexcrossword 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, 2.5.3 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Regex Crossword 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 Regex Crossword, and a listing is removed when the evidence for it stops holding up.
Get Regex Crossword
Every source we list for de.chagemann.regexcrossword 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
4fce8f8ea5d5e8cc03e53307deb04cee3eca32ce5ff99aa59903621780b45830
Signing certificate
50873866e03eb7ac21feb6188ad4f2ebf17ae49a48f9b0cdd34214fcc02ea494
Permissions Required
What each permission lets Regex Crossword 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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