# drip: An open-source period tracker: log your cycle and practise fertility awareness, with data kept on your phone.

Canonical page: https://herfound.com/apps/drip

Compiled by HerFound from public sources; facts aren't founder-confirmed yet.

## About

drip is an open-source period and fertility tracker that keeps your entries on your phone, not in the cloud 🌱🩸 Log bleeding, temperature, cervical mucus and cervix, sex, desire, pain, mood and notes, and switch off any category you don't need. After three full cycles it predicts your next three periods, and for fertility awareness it uses the symptothermal method, with calculations you can read in its published source code. It's a non-commercial volunteer project of Heart of Code e.V. in Berlin, with no ads, built with gender inclusivity in mind.

## Who drip is for

People who want to track only their period or practise fertility awareness with the symptothermal method; the site says it is designed with gender inclusivity in mind.

## Features

- 🩸 Log bleeding, temperature, cervical mucus, cervix, sex, desire, pain, mood and notes
- 🎚️ Switch individual tracking categories on or off
- 🌡️ Fertility awareness with the symptothermal method, open for anyone to check in the code
- 🔮 Next three period predictions after three complete cycles
- 📊 Charts and statistics for cycle and period length
- 🔒 Data stays on your phone, with optional password protection and CSV import/export
- ⏰ Reminders for your next period and temperature measurements

## Details

- Category: Cycle & Health
- Platforms: iOS, Android
- Pricing: Free
- Availability: Available
- Based in: Germany
- App Store rating (Apple's, not HerFound's): 4.0 from 59 ratings, checked 2026-11-14

## Maker

- Heart of Code e.V.: https://heartofcode.org

## Quick facts

From drip's own published pages. These summarise what the company states, not an audit of what the app does.

- **Selling personal data:** Says it does not sell personal data (Stated in the app's US App Store description; the privacy policy does not use the word "sell").
  - Quote: "Non-commercial. drip. doesn’t sell your data, no ads"
  - Source: https://apps.apple.com/us/app/drip-period-cycle-tracker/id1584564949 (checked 2026-11-12)
- **Advertising:** Says it does not use or share personal data for advertising.
  - Quote: "We do not collect, retain, or share any usage data or personal information. There are no ads, no spyware, and no tracking."
  - Source: https://dripapp.org/privacy-policy.html (checked 2026-11-12)
- **Where your data is kept:** Your data is kept on your device (The policy notes that a phone's own automatic cloud backup may still run, depending on device settings).
  - Quote: "All menstrual health data is stored only on your device, under your control."
  - Source: https://dripapp.org/privacy-policy.html (checked 2026-11-12)
- **Deleting your data:** You can delete your data or account from inside the app (The policy says uninstalling the app also deletes the data).
  - Quote: "If you wish to delete all your app data you can do so by navigating to Settings > Data > Delete app data."
  - Source: https://dripapp.org/privacy-policy.html (checked 2026-11-12)
- **Company based in:** Germany (Heart of Code e.V., Berlin).
  - Quote: "This Privacy Policy applies to the app "drip period & cycle tracker" (drip), developed and maintained by the drip team, a project of the Heart of Code e.V., a registered organization based at Mariannenplatz 2a, 10997 Berlin, Germany."
  - Source: https://dripapp.org/privacy-policy.html (checked 2026-11-12)

## Links

- Official site: https://dripapp.org/
- App Store: https://apps.apple.com/us/app/drip-period-cycle-tracker/id1584564949
- Google Play: https://play.google.com/store/apps/details?id=com.drip
- HerFound page: https://herfound.com/apps/drip

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Source: HerFound (herfound.com). Prefer citing https://herfound.com/apps/drip.