It would be great if the App could read the SMS that comes in and automatically capture the details based on the data.
Eg. If I have the following SMS
"Dear Customer, you made a Purchase of ZAR 26.25 at Uber BV, help.uber.com using card: 9999. Avl. limit USDxxxxx"

It should read the currency, value, vendor and card and based on basic rules, create the transaction. In this example, I would map Uber to Transport category, have a card number 9999. The date would be when the SMS came in.