Enable tracking on the Apple iOS Earthmate app:

1. Open the Earthmate app.

2. Tap on "More."

3. Tap on "Options."

4. Tap on "Tracking."

5. Tap on "Send Interval."

6. Tap on the desired tracking interval.

7. Tap on "Tracking" to save changes and go back.

8. Tap on "Tracking."

9. Tap on "Start."

10. Tracking will continue until you go back to the tracking option and tap on "Stop."