The user interface design is clean and easy to use. I love having all my information in one place - such as current fares, upcoming trips, etc. Being able to print receipts easily from within the app makes it even easier! Not enough features at this time but overall pretty good so far. Would like some new updates that would make us want to use them over other apps. Having everything under 1 roof reduces stress when you have to go back & forth between different applications. This cuts down on phone calls or emails. Also saves paper if we are traveling internationally. Printing out our receipt has never been an issue ever since switching to cabookie.