The iPad also lets you send texts using its Messages app, but it only works with users of other Apple devices. And the iPad doesn't alert you to phone calls.
The G Pad's alerts are similar to what smartwatches such as Samsung's Galaxy Gear are trying to do. But the small screens of smartwatches limit your ability to read and reply to the messages. With the Gear, for instance, text replies are limited to voice dictation that can get garbled in the electronic translation. With the G Pad, you have the luxury of a full on-screen keyboard.