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Perfice vs Daylio: catalog facts
Perfice	Daylio
Free Free and open source under the MIT licence.	Freemium Free to download; pricing details are not stated on the homepage.
Android	Android
Track any custom value, not just preset categories Shows correlations between tracked items	Two-tap daily entries with no writing required Mood and activity correlation statistics
Correlations need consistent logging over time to be useful Little documentation on the homepage	Pricing not stated on the homepage Mood scale is simple unless you customise it
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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