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Sketching (PFA)

(SECUSO) Create sketches without advertisement or unnecessary permissions
Privacy Friendly Sketching lets you create and save simple sketches in a quick manner without having to endure ads or requiring additional permissions!

Select a background color or a background image and start drawing! This app allows you to draw simple sketches in a matter of seconds to share with your friends.
A key feature of Privacy Friendly Sketching is ensuring the users privacy at all costs. This means that every sketch is saved encrypted and that there are no permissions being required in order to use this app.
In addition, we will never display any annoying ads to increase the fun factor while using the app and eliminate any data usage that might occur!
The only permission that this app requires (that is completely optional) is to access the import/export functionality of this app, in which you can import an image from the device storage or export a sketch into the device storage.

Functionalities:

Edit a sketch with various different colors, thickness and transparency

Undo/redo the last action

Zoom and Scrolling

Select a background image or a background color for your sketch

Export sketches as a PNG into the device storage

Share sketchs with your friends

Gallery overview that shows all encrypted sketches


Privacy Friendly App on GitHub:
https://github.com/SecUSo/privacy-friendly-sketching

You can reach us via
BlueSky - 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

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.1.2 (4) suggested Added on Apr 25, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • org.secuso.privacyfriendlysketching.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 12 MiB PGP Signature | Build Log

  • Version 1.1.0 (2) - Added on Sep 21, 2022

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • run foreground service
      Allows the app to make use of foreground services.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 10 MiB PGP Signature | Build Log

  • Version 1.0 (1) - Added on Oct 01, 2019

    arm64-v8a armeabi armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 10 MiB PGP Signature | Build Log