Calcwell: Calculator & History

You just want to add some numbers. Calcwell opens straight to the keypad: no subscription screen, no pop-up before your first calculation, and ads never interrupt you while you type. FAST, CLEAN CALCULATOR • Opens in about a second, keypad first • Live preview: see the result before you press = • Big, easy-to-read numbers with thousands separators • Long-press the result to copy it SCIENTIFIC CALCULATOR WHEN YOU NEED IT • One tap switches to scientific mode • sin, cos, tan, ln, log, √, x², xʸ, π, e, !, 1/x, brackets • Degrees or radians • Precise decimal math: 0.1 + 0.2 = 0.3, not 0.30000000004 CALCULATOR WITH HISTORY AND LABELS • Every calculation is saved to your history automatically • Add a label like "Rent split" or "Jacket sale" so you know what a number was weeks later • Search your history by label or number • Pin the results you come back to • Tap any entry to load it back into the calculator; swipe to delete, with undo EVERYDAY TOOLS • Discount calculator with sales tax: final price and how much you save • Tip calculator and split the bill between friends • Percentage calculator: X% of Y, percent change, what percent X is of Y • Unit converter for length, weight, temperature, volume and area • Save any tool result to your history HOME SCREEN WIDGET • See your latest result and its label • Jump straight into the tools PRIVATE BY DESIGN • No account, no login, no sign-up • Your history stays on your phone • Light and dark themes Calcwell is supported by ads. A small banner sits at the bottom of the screen, and full-screen ads appear only at natural pauses, such as after you leave a tool. Never while you are typing a calculation.