This app would be perfect if it weren't for the fact that you cannot add tax to the subtotal, instead the app assumes you've already did the math on the tax, and there is no option for the math be done otherwise, which kinda makes the app pointless since you need to determine the tip on the subtotal without the tax. So lets say for example I went out to eat with friends (which would really be the point of using this app) and we all got different things; I got a drink for $12, and they got an entree for $25 and the total would be $37, i would need to know how much i need to pay on the tax and on the tip, but this app assumes you've already done the math on the tax and have included it. So there needs to he an option to have an untaxed amount which would then be taxed and tipped on. Literally the only thing preventing this app from being perfect.
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