# Open-source period trackers

4 open-source period trackers rated against public privacy criteria.

1. [drip.](https://privacyratings.com/period-trackers/drip/): B (87/100). Open source menstrual cycle tracker for Android and iOS that supports the symptothermal method and keeps all data on the device.
2. [Mensinator](https://privacyratings.com/period-trackers/mensinator/): B (87/100). Open source Android period tracker with custom colour-coded symptoms, cycle and ovulation predictions, and data export, with no sign-up and no network access.
3. [Periodical](https://privacyratings.com/period-trackers/periodical/): B (77/100). Open source Android period calendar that estimates fertile days with the calendar method, with notes, symptoms and local backup.
4. [Euki](https://privacyratings.com/period-trackers/euki/): C (67/100). Open source sexual and reproductive health app from a US nonprofit, with period tracking, reminders and health information. Data stays on the device, with an optional PIN.

Source: https://privacyratings.com/open-source/period-trackers/