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Simple Diary vs Lifeograph: catalog facts
Simple Diary	Lifeograph
Free Free and open source under the GPL-3.0 license.	Free Free and open source under the GPL-3.0 license.
Linux	Windows, macOS, Linux, Android
Stores entries as standard Markdown Supports images and dark mode	Supports encrypted and unencrypted diaries Combines rich text, tagging, and task management
Requires Linux with GTK 4 and libadwaita	Mobile version is available for Android
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is 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 8, 2026

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