Circuit Training (PFA)

SECUSO - Security Usability Society | Sports & Health

5 Downloads 16 Views v1.2 7.88 MB 4.1+

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(7.88 MB)

Editor's Overview

Circuit Training (PFA) is a sports & health application developed by SECUSO - Security Usability Society, packaged as a single Android APK of version 1.2 weighing in at 7.88 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 7.88 MB, so it installs quickly even on modest connections.
This build is signed by "SECUSO - Security Usability Society" — 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

Privacy Friendly Circuit Trainer is an Android App that supports the user during their circuit training session. It provides a configurable set of timers for the exercises and the rest phases as well as multiple other features.

Workout Timer
After configuring the set of timers in the main menu you can start the workout routine by pressing the start button. The workout view has animations and sound output features which can be turned on and off inside the settings menu.

Motivation Alert
The app can show you motivation alerts to remind you of planned workout sessions. You can define the time of day and the notification texts inside the settings menu.

Block Periodization
When scheduling the timers you may also choose the block periodization feature. This feature allows you to configure longer, separate breaks in between the exercises. This way the workout can be split into multiple high intensity workout cycles.

Workout History
The app can collect statistics about your performed workout sessions. The collected data comprises of the time spend working out and the calories burnt while exercising. The accuracy of the calories calculation can be improved by configuring the necessary user data in the settings menu. The collection of this data can be deleted as well as turned on and off inside the settings menu.

Exercise Sets
The app allows you to create your own Exercise Sets for the circuit training. Therefore you can combine your own exercises to exercise sets. The image assigned to an exercise is displayed during the workout. In addition, the exercise sets can be repeated during a workout. For this you can set the number of rounds before starting the workout.

How does Privacy Friendly Circuit Trainer differ from other similar apps?

1. No permissions
Privacy Friendly Circuit Trainer does not require any permissions. The selection of images is done by a task to the gallery so the app does not have any access to the device's storage without the user's control and interaction.

2. No advertisement
Many other free apps in the Google Play Store dazzle annoying advertising and also shortens battery life.

Privacy Friendly Circuit Training is part of the Privacy Friendly Apps group developed by the research group SECUSO at Technische Universität Darmstadt. More information at: https://secuso.org/pfa

You can reach us via
Bluesky - @secusoresearch.bsky.social https://bsky.app/profile/secusoresearch.bsky.social
Mastodon - @SECUSO_Research@bawü.social https://xn--baw-joa.social/@SECUSO_Research/
Job opening - https://secuso.aifb.kit.edu/english/Job_Offers.php

Details

Version	v1.2
Size	7.88 MB
Developer	SECUSO - Security Usability Society
Category	Sports & Health
Package	org.secuso.privacyfriendlycircuittraining
Android	4.1+
Last Updated	Oct 29, 2026
Downloads	5

Frequently Asked Questions

Is Circuit Training (PFA) 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 Circuit Training (PFA) require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Circuit Training (PFA) safe to install?
We link to the exact APK published by SECUSO - Security Usability Society. 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 Circuit Training (PFA)?
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 Circuit Training (PFA)

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.secuso.privacyfriendlycircuittraining.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «Circuit Training (PFA)» by SECUSO - Security Usability Society 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.