The Curve Widget gives you up to date information about your Curve card at a glance. It displays as a badge on your iPhone which you will be able to see by swiping right from the iPhone home screen.
The Curve Widget shows the card you have select and the amount you have spent that day. To see the information, make sure you're signed into the app and have an internet connection.
To add the Curve Widget to your iPhone, swipe right when on your phone's homescreen, scroll down and tap 'edit'. You'll then be able to tap the '+'.