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Euki vs Mensinator: catalog facts
Euki	Mensinator
Free Free to use with no paywalls, supported by donations.	Free Free and open source under the MIT licence.
Android, iOS	Android
Period and pregnancy tracking Available in English and Spanish	Customisable, colour-coded symptoms Cycle prediction from average period and luteal phase length
Available for Android and iOS	Android only No tagged releases on the repository
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
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 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.