Hi, I developed Ditobook to find friends who want to play Digital Touch too. The app can help you directly import contacts to your address book so you can easily add friends from Apple Watch app on iPhone. App Store address: https://itunes.apple.com/us/app/ditobook/id1022703461 Update: 1. The registration bug "mobile number is invalid" has been fixed in version 1.1. Please upgrade the app for registration. 2. There is a country dialing code selection list so you don't need to manually input dialing code.