If your math skills fly out the window the second you try to split a restaurant bill, you’re going to want to download this app immediately. Billr.me is a completely intuitive app that allows you to divide up your dinner check fairly and accurately just by typing in a few numbers. Create a tab for each person, then add tax and tip and send each person their “bill” via e-mail or text.

You can get Billr.me for $0.99 in the iTunes App store.