(SECUSO) Create sketches without advertisement or unnecessary permissions
About this app
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
Licensed under GPL-3.0-or-later, by SECUSO - Security Usability Society.
What's New in v1.1.3
Imported from the F-Droid repository index.
Version history
Sep 8, 2025 · 12.6 MB · Android API 21–34 · code 100
Imported from the F-Droid repository index.
SHA-256 cdfd575dbca76fa3c1d7916bd38c2ed3ed7dc7c0d5fd8cdefb0cf16eaa15e261
Apr 25, 2025 · 12.6 MB · Android API 21–34 · code 4
Imported from the F-Droid repository index.
SHA-256 664f46b7541837a1355bcf0b7db48e2f75612972d6eaa3aa7743b996a17733a4
Sep 21, 2022 · 10.4 MB · Android API 21–32 · code 2
Imported from the F-Droid repository index.
SHA-256 026ec237383c92e9a5558cb90f46c9578af569cc5de2aaf9c974bf5f0a4f656f
Will it run on your device?
87%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be org.secuso.privacyfriendlysketching is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.1.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Sketching (PFA) first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Sketching (PFA), and a listing is removed when the evidence for it stops holding up.
Get Sketching (PFA)
Every source we list for org.secuso.privacyfriendlysketching is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
cdfd575dbca76fa3c1d7916bd38c2ed3ed7dc7c0d5fd8cdefb0cf16eaa15e261
Signing certificate
3cd0b43dfc09382718fc539f124b521da315e27e9c86a644a33fc41dba3138b1
Permissions Required
What each permission lets Sketching (PFA) do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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