For Android
1. Open Chrome.
2. Go to www.nick-app.com.
3. Tap the menu icon (3 dots in upper right-hand corner).
4. Tap "Add to home screen".
5. Done. App will be installed on your phone.
For iOS / iPhone
1. Open Safari.
2. Go to www.nick-app.com.
3. Tap the share button (middle button on the bottom bar).
4. Tap "Add to home screen".
5. Done. App will be added to your phone.