Designed in the Swiss style, Sumhold is a calculator that instantly calculates and stores numbers with a reductive interface and simple swipe gesture.
Sumhold, featuring a minimalist design, makes complex calculations and number storage simple.
Unlike most basic calculators, Sumhold keeps a running tally of your current calculation at the top and, when calculations become complex, automatically inserts parentheses to keep everything clearly readable. There is no need for an “=” button because it calculates as you type.
When a calculation is complete and you need to store the result for later, you simply drag it down toward the keypad into Sumhold’s scratch-line to make a temporary button.