Nice interface but – Car Payment Calculator Mobile Review

Maybe it's just me and my iPhone 7+, but this calculator totally ignored the sales tax! Has a place to enter the percentage, but doesn't actually add it to the amount financed! I had been working on the premise that it was working perfectly, but when I got to the car dealer, they showed me that I was off by about $4000! Good thing they had room to negotiate on the price of the car!
Review by audio guy on Car Payment Calculator Mobile.