How do I enable location services for an app?

How do I enable location services for an app?

Apple Users

Learn how to turn Location Services and GPS on or off for individual apps here: https://support.apple.com/en-us/HT207092

Android Users

Learn how to choose which apps use your Android phone’s location here: https://support.google.com/accounts/answer/6179507?hl=en&ref_topic=7189122