DetermApp

F-Droid Open Source | Science & Education

10 Downloads 29 Views v1.3 2.54 MB 4.1+

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(2.54 MB)

Editor's Overview

DetermApp is a science & education application developed by F-Droid Open Source, packaged as a single Android APK of version 1.3 weighing in at 2.54 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

Install Checklist

Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
File size is a light 2.54 MB, so it installs quickly even on modest connections.
This build is signed by "F-Droid Open Source" — always verify the developer name matches what's listed on the app's official store page before installing an update.
After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

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

Details

Version	v1.3
Size	2.54 MB
Developer	F-Droid Open Source
Category	Science & Education
Package	de.determapp.android
Android	4.1+
Last Updated	Oct 29, 2026
Downloads	10

Frequently Asked Questions

Is DetermApp free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does DetermApp require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is DetermApp safe to install?
We link to the exact APK published by F-Droid Open Source. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update DetermApp?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

How to Download & Install DetermApp

Tap the Download APK button above and save the file to your device.
Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
Open the downloaded de.determapp.android.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «DetermApp» by F-Droid Open Source and grant only the permissions it actually needs.
Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.