To save you taking your hands off the wheel when driving, the ETA App monitors your car journey progress and automatically sends a text to a phone number of your choice if you are running late (or early) by a specified amount.The app will also (optionally) send a text when you set off.If you prefer, you can turn off the auto-text feature and just send an update text whenever you like, at the touch of a single button. (The app will keep the screen on for you so don