Based on the provided sources, here are the top phone tracker apps with GPS tracking capabilities in 2024:

Android and iOS Devices:

  1. Google Find My Device: A free app available for Android and sometimes for iOS (Apple Find My) that tracks device location only.
  2. SpyX: Offers GPS tracking, requires installation on target device for Android and iOS; offers a free trial.
  3. Hoverwatch: Provides location and app data; installation required for Android. (Remember to always follow legal procedures when tracking someone else's device.)
  4. Snoopza: tracks location and app data for Android; installation required.
  5. Msafely: tracks location and app data for Android and iOS; installation required.
  6. Eyezy: tracks location and app data for Android and iOS; installation required.
  7. Life360: primarily designed for location sharing and family tracking, compatible with Android and iOS; it offers a free version and premium plans.
  8. uMobix: provides location tracking and app data for Android and iOS, with installation required; features a money-back guarantee.

iOS Devices Only:

  1. Apple Find My: a free app for iOS devices to track location, compatible with iPhone, iPad, and iPod touch; it's an Apple official service.
  2. Find My Friends: a free app from Apple for iOS devices, allowing users to track the location of iOS devices.

Please note that all these applications require installation on the target device, unless otherwise specified for services like Apple's Find My and Find My Friends, which are system-level services for iPhones and iPads. Always ensure that you adhere to legal use policies and obtain consent for tracking activities on another person's' devices.