Mooneva Cycle vs Natural Cycles: catalog facts
 Mooneva Cycle |  Natural Cycles |
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Best for: Tracking periods and fertility without sharing data with a cloud service |
Best for: People looking for hormone-free birth control or fertility tracking |
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Free Free and open source under the GPL-3.0, with no ads. |
Paid Subscription service; prices are not listed on the homepage. |
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Android |
Android, iOS |
- 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
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- FDA-cleared as a birth control app
- Covers contraception, pregnancy planning, postpartum and perimenopause
All 3 strengths for Natural Cycles- FDA-cleared as a birth control app
- Covers contraception, pregnancy planning, postpartum and perimenopause
- Works with an overnight band and other compatible devices
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- No cloud sync between devices
- Small project with no GitHub releases; installed through F-Droid
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- Less effective than an IUD, with 93% typical-use effectiveness
- Requires regular temperature or biomarker measurements
All 3 limitations for Natural Cycles- Less effective than an IUD, with 93% typical-use effectiveness
- Requires regular temperature or biomarker measurements
- Pricing not listed on the homepage
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Downloadable app |
Downloadable app |
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Open source |
Not open source |
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License: GPL-3.0 |
License not stated |
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No account needed |
Account needed |
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Offline features available |
Not stated if it works offline |
Sources for Mooneva CycleCatalog checked October 2, 2026 |
Sources for Natural CyclesCatalog checked September 24, 2026 |
“Not stated” means we have not confirmed it. Features can vary by device and plan.
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