What is it?
TKeyboard enables you to use Mac keyboard to do typing on your iOS devices, it's based on bluetooth communication, super easy to set up.
How to use?
Install both TKeyboard for iOS and TKeyboard for Mac, enable TKeyboard as keyboard extension on your iOS device, switch keyboard, you shall be able to establish a bluetooth connection between iOS and Mac, you are ready to go.
Download from App Store
you can also download TKeyboard from App Store, the iOS version costs 1.99$, buy me a cup of coffee if you don't mind ;)
TKeyboard for iOS App Store：https://itunes.apple.com/cn/app/tkeyboard/id1168383839?l=zh&ls=1&mt=8
TKeyboard for Mac App Store：https://itunes.apple.com/cn/app/tkeyboard/id1168383849?l=zh&ls=1&mt=12