The Twinn app is required so you can register your wearable and manage your payment cards.
Other housekeeping functions include freezing or removing a payment card and removing a wearable itself.
The Twinn app is supported on Android 7 however, for stability and optimal performance we suggest that you run a higher version.
For iOS it is suggested that you run the latest version to maximise performance.
Please note the apps are only available on mobile devices, not desktop or tablets.