Build an Android app that monitors the user's location and then records this information to a Firebase database, so you can view the device's exact coordinates in realtime.

Family tracking apps take advantage of GPS technology to display the real-time locations of your loved ones so you can have peace of mind—especially for kids ...

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The Speedometer: GPS Speedometer app by Simple Design includes a GPS tracker, speedometer, and odometer in a single app. The head-up display (HUD) is the app's most impressive feature.