Bloody Health Cycle Tracker

A menstrual cycle tracking app that's open-source and leaves your data on your phone. Use it to track your menstrual cycle or for fertility awareness!

Development setup

1. Either start a virtual device in Android Studio (or make sure it's already running, you should see a phone on your screen) or set your physical device like your phone up to run the app.

2. Clone this repository:

   git clone git@gitlab.com:bloodyhealth/drip.git
   cd drip

3. Run npm install

4. You may need to open your app's /android folder in Android Studio, so that it detects, downloads and cofigures requirements that might be missing, like the NDK and CMake to build the native code part of the project. Also check out nodejs-mobile repository for the necessary prerequisites for your system.

5. Run npm run android

6. In another tab, run npm run log to see logging output

7. Run adb shell input keyevent 82 and select enable hot reloading (see https://facebook.github.io/react-native/docs/debugging.html)

8. We recommend installing an ESLint plugin in your editor. There's an .eslintrc file in this project which will be used by the plugin to check your code for style errors and potential bugs.

Tests

You can run the tests with npm test.

Debugging

When running into an old version of the app try to run the following command first: react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res

NFP rules

More information about how the app calculates fertility status and bleeding predictions in the wiki on Gitlab