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Tuisku

Name: Tuisku
Author: Omar

Omar

A simple and lightweight encrypted notes app

Productivity
FOSS
Free
No ads
No tracking

Android only

Get Tuisku

Get it on F-Droid Get it on IzzyOnDroid Get it on GitHub Get it on Zapstore

What are these stores? F-Droid, IzzyOnDroid, GitHub, Zapstore

Tuisku is a simple and lightweight notes app that encrypts your notes with the ChaCha20 algorithm stored internally, you can share these notes unencrypted (if you wanted to) using the share button ontop of the note editor. You can also disable screenshoting in Settings and view your encryption key there.

Developer: Omar
Source code: github.com/omaawr/tuisku
Added to AppCosmos: 9 October 2026
License: GPL-3.0-only