Geological Time Scale

F-Droid Open Source | Science & Education

6 Downloads 18 Views v0.7 89.73 KB 4.1+

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(89.73 KB)

Editor's Overview

Geological Time Scale is a science & education application developed by F-Droid Open Source, packaged as a single Android APK of version 0.7 weighing in at 89.73 KB. 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 89.73 KB, 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

The App shows the geological time scale of the history of the earth. The time scale shows the units Eonothem, Erathem, Period, Epoch and Stage. It shows the begin of every period and if it is a GSSP. The time scale can be scrolled up and down if it does not fit on the screen. The view can be changed to fit the height of the display. Additionally, there is a true to scale option which sets the height of all periods according to its duration. You can select a period by touching it. Then, only the selected period and the subsequent periods are shown.

With the plus button it is possible to add a column with the more detailed unit at the right. The minus button removes the rightmost column. By sliding left or right, the view can be moved towards the more detailed or more coarse units.

There is also a search function which highlights the desired period.

Details

Version	v0.7
Size	89.73 KB
Developer	F-Droid Open Source
Category	Science & Education
Package	org.tengel.timescale
Android	4.1+
Last Updated	Oct 29, 2026
Downloads	6

Frequently Asked Questions

Is Geological Time Scale 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 Geological Time Scale require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Geological Time Scale 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 Geological Time Scale?
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 Geological Time Scale

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 org.tengel.timescale.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «Geological Time Scale» 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.