Todo List (PFA)

SECUSO - Security Usability Society | Task

8 Downloads 20 Views v3.3 8.32 MB 4.1+

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(8.32 MB)

Editor's Overview

Todo List (PFA) is a task application developed by SECUSO - Security Usability Society, packaged as a single Android APK of version 3.3 weighing in at 8.32 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 8.32 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

The Privacy Friendly To-Do List can be used to keep outstanding tasks in mind and organize a personal schedule. This application allows to create lists of tasks which can be individually managed. Each list contains a set of tasks. Each task can have a deadline, a reminder time and a list of subtasks. By setting a reminder time the user will be informed by a notification. It is possible to display all tasks in a calendar, to protect the app with a secret pin and to sort and prioritize tasks within a list. Colors indicate the urgency of a task (taking the deadline into account).

Features of Privacy Friendly To-Do List

1. PIN protection
Open the Settings menu to setup a PIN protection for your application. The PIN needs to be a number with 4 digits. You are asked for it every time you start the application / start the main view.

2. Reminder
You can set a reminder to your tasks that will notify you if a deadline is approaching. Settings provide you the possibility to enable a notification sound.

3. Widget
In addition, this app provides a widget that you can add to your device’s home screen. The widget presents you tasks that belong to a chosen list. Clicking on a task or its checkbox leads to the main view of Privacy Friendly To-Do List.

4. Progress by subtasks
By default, progress can be chosen freely by the user when creating or editing a task. To-Do List gives the opportunity to automatically compute and show the progress of a task dependent on its done subtasks. Therefore go to Settings and enable progress by subtasks.

Our Privacy Friendly App differs from other applications with respect to three aspects:

1) Minimal permissions
Privacy Friendly To-Do List does not use more permissions than are strictly necessary to provide its functionality.

2) No advertisement
Privacy Friendly To-Do List completely relinquishes advertisement.
Many other free apps in the Google Play Store dazzle annoying advertising which also shortens battery life.

3) No tracking
Privacy Friendly To-Do List does not use any trackers.

Privacy Friendly To-Do List is part of the Privacy Friendly Apps group developed by the research group SECUSO at Karlsruhe Institute of Technology. More information at: https://secuso.org/pfa

You can reach us via
X - @SECUSOResearch https://x.com/secusoresearch
Mastodon - @SECUSO_Research@bawü.social https://xn--baw-joa.social/@SECUSO_Research/
Job Offers - https://secuso.aifb.kit.edu/english/Job_Offers.php

Details

Version	v3.3
Size	8.32 MB
Developer	SECUSO - Security Usability Society
Category	Task
Package	org.secuso.privacyfriendlytodolist
Android	4.1+
Last Updated	Oct 29, 2026
Downloads	8

Frequently Asked Questions

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

Is Todo List (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 Todo List (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 Todo List (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.privacyfriendlytodolist.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «Todo List (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.