If you're concerned there's someone tracking your device without your knowledge or consent, deciding what to do next can be difficult. Depending on who is tracking you and why will determine whether you'd like to get your local law enforcement involved but for the purpose of our article you have two options. First, you can head to the 'Location Settings' in your phone and toggle the application's location permissions off. Second, you can simply long-press the app and uninstall it. Both of these options mean the other person will no longer be able to track your location assuming they're using a third-party app. If you suspect someone is checking your location using iCloud, change your password and be sure that your two-factor authentication is turned on and the contact information is up-to-date.