I like that it is easy to use with my iPad, as well as being able to connect to other devices and computers via USB or Bluetooth. It also has excellent battery life, which allows me to be mobile all day long without having to charge! The only thing I don't like about this app so far is how complicated some of the controls can seem at first - but once you get used to them they are very intuitive. This is definitely one of those apps that's worth investing in if you're looking for an inexpensive way to keep your phone charged up throughout the entire workday. This application makes sure that I have enough time to complete my tasks before heading home to recharge.