Gitify Mobile 
If you are looking for the desktop version - manosim/gitify.
Download
Available for free on iOS & Android.
Prerequisites
Setup
First you will need the react-native cli. To install:
npm install -g react-native-cli
Then install the project dependencies:
npm install
Running the project
For both platforms, first open the terminal:
npm start
iOS
To run the project on iOS you will need Xcode 7 and above. For development, it is suggested to use the emulator. Finally just open the XCode Project or use the shortcut:
./scripts/run ios
Android
To run the project on Android, once you have downloaded the SDK, use the shortcuts:
Runs the android emulator (android avd to create it):
# emu_name: Defaults to Android_6.0
./scripts/emulator android emu_name
Run the app on the running emulator.
./scripts/run android
Test
To run the tests (eslint):
npm test