CalcSpace

CalcSpace lets you use more than one calculator at the same time, on one screen. Stop switching apps or clearing your work just to do a second calculation. Open one calculator, two side by side, or a grid of four—then add tabs to keep up to eight separate workspaces. Every calculator slot can be any type you choose: • Basic — fast everyday arithmetic with parentheses • Scientific — trig, logarithms, powers, roots, π and e • Tip — bill, tip percentage, and split-by-people totals • Running Total — a receipt-style tape that adds and subtracts as you go • Unit Converter — length, mass, volume, temperature, speed, area, and data • Currency Converter — live exchange rates with an offline fallback Why you'll like it: • Multiple calculators at once • Up to 8 saved workspaces • Pick and change each calculator type • Values and layouts persist between launches • Built for iPhone and iPad • Optional Pro upgrade removes banner ads Whether you're splitting a dinner bill while converting currency, checking a scientific result against a running total, or simply want two calculators open at once, CalcSpace keeps everything in view.