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Flo vs Mooneva Cycle: catalog facts
Flo	Mooneva Cycle
Best for: People tracking their menstrual cycle, ovulation or pregnancy on a phone	Best for: Tracking periods and fertility without sharing data with a cloud service
Free + paid options Free to download, with a paid premium subscription.	Free Free and open source under the GPL-3.0, with no ads.
Android, iOS	Android
Tracks periods, ovulation and pregnancy in one app Symptom logging alongside cycle dates	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
Proprietary service that handles sensitive health data Some features require a paid subscription	No cloud sync between devices Small project with no GitHub releases; installed through F-Droid
Downloadable app, Hosted service	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 Flo flo.health play.google.com/store/apps/details apps.apple.com/us/app/flo-cycle-period-tracker/id1038369065 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.