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Clue vs Mooneva Cycle: catalog facts
Clue	Mooneva Cycle
Best for: People who want to track their menstrual cycle on their phone	Best for: Tracking periods and fertility without sharing data with a cloud service
Free + paid options Free app with a paid subscription for additional features.	Free Free and open source under the GPL-3.0, with no ads.
Android, iOS	Android
Cycle predictions and personalised insights Available on both iOS and Android All 3 strengths for Clue Cycle predictions and personalised insights Available on both iOS and Android Science-based approach to content	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
Some features require a subscription Sensitive health data is handled by a commercial service	No cloud sync between devices Small project with no GitHub releases; installed through F-Droid
Downloadable app	Downloadable app
Not open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Offline features available
Official website Full listing and sources Sources for Clue helloclue.com play.google.com/store/apps/details apps.apple.com/us/app/clue-period-cycle-tracker/id657189652 Catalog checked September 23, 2026	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

“Not stated” means we have not confirmed it. Features can vary by device and plan.