A good cycle tracking app predicts periods and fertile days, logs symptoms and syncs with devices you already use. Just as important is how it handles your data: where it is stored, whether it is shared or sold, whether you can use the app without an account, and how easily you can export or delete everything. Read the privacy policy before you log sensitive details.
Cycle apps hold some of the most sensitive data on your phone. Choose features and privacy together.
Features to compare
| Feature | Why it matters |
|---|---|
| Period and fertile window prediction | Planning and awareness |
| Symptom and mood logging | Spotting patterns to discuss with a doctor |
| Wearable and test integration | Temperature, LH test results |
| Reminders | Pills, period start, testing |
| Reports | Sharing with your clinician |
Privacy checklist
- Account options: can you use it without an account or in a local-only mode?
- Storage: on your device, in the cloud, encrypted?
- Sharing: does the company sell data or use it for advertising?
- Deletion: can you delete all data and your account easily?
- Export: can you take your history with you?
- Location: which country’s laws apply to stored data?
Regulatory status
Most cycle apps are wellness tools. A few are cleared for specific uses such as contraception. Read what the app is cleared for, if anything.
Add hormone data with ovulation tests. Browse cycle and period care.
Common questions
Are period tracking app predictions accurate?
Predictions are estimates based on your logged data. They are less reliable with irregular cycles. Ovulation tests or temperature data can add information.
Can I use an app without an account?
Some apps offer local-only or anonymous modes that keep data on your device. Check the settings.
Do apps share my data?
Policies vary. Look for clear statements on selling data, advertising, third-party sharing and how the company responds to legal requests.
Is any period app approved as contraception?
A small number of apps are FDA-cleared for contraception when used as directed. Most period apps are not. Check the app's regulatory status.