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Happy Moments vs Diary: catalog facts
Happy Moments	Diary
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source under the GPL-3.0 licence.
Android	Android
All entries are stored only on the device Combines photos and notes in one entry	Entries saved as plain text files with Markdown Incremental and full search across entries
Very new project with a short track record Android only, with no sync or backup service described	Android only No built-in sync between devices
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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