use determination keys easily
About this app
DetermApp allows you to use identification keys*, streamed from the web or from local files. Additionally, the DetermApp tools (currently only available in german) allow creating identification keys at a PC (Windows or Linux). It is possible to send identification keys to this Apps from the DetermApp tools using your home network.
You can use the content from any server. This server must serve content as described at https://gitlab.com/determapp/determapp-android/blob/master/package%20sources.md. However, the only known server for this is determapp.de. This server only provides some and only german content.
*A identification key is something which based on questions and the answers you provide tell you which animal you described
Licensed under GPL-3.0-only.
What's New in v1.4.2
Imported from the F-Droid repository index.
- routine maintenance
Version history
Jul 15, 2024 · 3.4 MB · Android API 21–34 · code 9
Imported from the F-Droid repository index.
- routine maintenance
SHA-256 421f0d40c627e320c3fb5f316e5ec2824360a596ecb81edb9c9b5c133b195f68
Oct 15, 2022 · 3 MB · Android API 21–33 · code 8
Imported from the F-Droid repository index.
SHA-256 0e2f2dc8f700043b96bfac58e623ce6592f99b4de73babe9a46be960c00de48f
Sep 25, 2019 · 2.5 MB · Android API 16–28 · code 6
Imported from the F-Droid repository index.
SHA-256 149379e7a97263555f2f4e5639b156baa4f239ec745fef7aa8b85db17f6253e8
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.determapp.android 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, 1.4.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall DetermApp 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 DetermApp, and a listing is removed when the evidence for it stops holding up.
Get DetermApp
Every source we list for de.determapp.android 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
421f0d40c627e320c3fb5f316e5ec2824360a596ecb81edb9c9b5c133b195f68
Signing certificate
c08dd123036766895a3ecb004860ffc84213b000ce9dcdedc940d557ca637ec0
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.