We regularly review and test devices and operating systems for compatibility with our apps to ensure they continue to be compatible.  
In some cases, devices and operating systems may be removed from the Compatibility Guide for the following reasons, but not limited to: 

• The iPhone Operating System (iOS) is no longer supported with security patches by Apple, and they have discontinued support for the iOS.
• Apple has discontinued support for the device 
• The device did not pass testing with updated or new features of the app  
• New app and/or sensor features are not supported by the hardware of the device, or technical or performance limitations on the device