A running tally for iPhone

Tap in the numbers.
The total keeps up.

A running tally for the moments a calculator is overkill — splitting a bill, checking a receipt, tallying a cart. Every amount you enter counts until you tap it back out.

Coming to the App Store

TapSum on an iPhone, showing a tab named Karneval. Seven preset rows are priced up front — Kölsch 2,00 €, Radler 2,50 €, Aperol Spritz 7,50 €, Weinschorle 5,00 €, Kaffee 3,20 €, Wasser 2,20 € and Pfand zurück at −1,00 € — each with its own tap counter, all still at zero. Below them the total reads 0,00 € for 0 Getränke.