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Tuisku vs Notes Tech: catalog facts
Tuisku	Notes Tech
Free Free and open source under GPL-3.0.	Free Free and open source under the Apache-2.0 licence.
Android	Android
Encrypts stored notes with ChaCha20 Can share notes as unencrypted text	No internet permission and no account Encrypted database with per-folder vaults
Android 9.0 or newer Sharing a note sends it as unencrypted text	Uninstalling the app permanently deletes all notes No sync between devices
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: Apache-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.