Currently, there is no app for gas sales, reg. prem. diesel, price per liter, qty of liters. I can only enter a total, which does not work as a category, to track sales. There must be a way to do this. If anyone knows of a way, please share! Frustrating. Spent a lot of money on the Station and 2 Flex units last year, not knowing it will not fill our need. Do I need to get a new POS?