To switch between Apple and Android, you can use a BRYTE Account.
If you are currently anonymous, the first step is to upgrade to a BRYTE Account. You can find the link to upgrade by tapping the Settings menu, scrolling down, and tapping Account. Tap "Switch to BRYTE Account" and follow the app instructions.
Next, download the BRYTE App on your new device, and use your BRYTE Account login credentials to sign in.
If you'd like to revert back to an anonymous account, you can find the link in Settings > Account.