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Tuisku vs NoteSR: catalog facts
Tuisku	NoteSR
Free Free and open source under GPL-3.0.	Free Free and open source under the MIT licence.
Android	Android
Encrypts stored notes with ChaCha20 Can share notes as unencrypted text	AES-256 encryption for notes and attachments Fully offline with no account or tracking
Android 9.0 or newer Sharing a note sends it as unencrypted text	No sync between devices Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
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.