the fact that they charge a subscription fee for this app and the fact that their free trial only ends up actually being a FREE trial is if you remember to cancel before they start charging . which as we all know most people don't and end up paying all these subscription fees for apps and services they don't really need or use . you can look the card value up on your own for free just by Google searching it so why pay an app to do it for you when you can do it yourself