Compare software

Mooneva Cycle vs Bluemoon: catalog facts
Mooneva Cycle	Bluemoon
Best for: Tracking periods and fertility without sharing data with a cloud service	Best for: People who want a private, simple period tracker on Android
Free Free and open source under the GPL-3.0, with no ads.	Free Free and open source.
Android	Android
No internet permission, so cycle data stays on the device On-device encryption with PIN lock and discreet mode All 3 strengths for Mooneva Cycle No internet permission, so cycle data stays on the device On-device encryption with PIN lock and discreet mode Symptom and mood logging alongside cycle predictions	Data stays on the device Simple interface All 3 strengths for Bluemoon Data stays on the device Simple interface Available on F-Droid and Google Play
No cloud sync between devices Small project with no GitHub releases; installed through F-Droid	Android only Focused on basic tracking rather than detailed health insights
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-or-later
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for Mooneva Cycle mooneva.se github.com/aradar46/Mooneva-Cycle-Private-Period-Tracker f-droid.org/packages/com.mooneva.app Catalog checked October 2, 2026	Official website Full listing and sources Sources for Bluemoon nilsgrob.ch/work/bluemoon Catalog checked October 2, 2026

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