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App · Checked October 15, 2026

drip

An open-source cycle and fertility tracker that keeps what you enter on the phone.

Best forAn open-source cycle log that stays on an Android phone.

Who it's for
People who want to see the math and skip an account.

drip's site says the app is gender-inclusive and open source, and that your data stays on the device. It can log periods and sympto-thermal fertility signs, and it shows how it calculates rather than hiding the math. It is not a certified contraceptive. The download page we checked offers Android, including an APK if you skip the Play Store.

Pros

  • Free, open source, and the project says entries stay on the device.
  • It shows how a calculation is made instead of hiding it.

Cons

  • Android only. There is no iPhone app in this listing.
  • It is not a certified contraceptive, and it is plainer than the large commercial apps.

From the Jaan Journal

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