To be compatible with the Diamond Kinetics app, you must have an Apple Device, that can operate on iOS 16. You can follow the links below, for an updated list of Apple Devices, that can operate on iOS 16:
iPhone: https://support.apple.com/guide/iphone/supported-models-iphe3fa5df43/16.0/ios/16.0
IPad: https://support.apple.com/guide/ipad/supported-models-ipad213a25b2/16.0/ipados/16.0