Rule of Three is a focused macOS calculator for quick proportional calculations
Rule of Three is a focused macOS calculator for quick proportional calculations. Enter three known values — A, B and C — and the app instantly solves for X using the classic rule of three formula: X = B × C / A It is designed for everyday proportion work: resizing images, scaling designs, converting measurements, comparing ratios, adjusting recipes, checking percentages, planning layouts, and solving quick math without opening a spreadsheet. The interface is simple and distraction-free. Large input fields make each value easy to read, while the result is shown clearly and can be copied instantly. Built-in swap controls help you rearrange values faster when you need to compare different proportions. Features: • Solve direct rule of three calculations instantly • Clean A : B = C : X layout • Copy the result with one click • Swap values quickly • Clear all values fast • Choose decimal precision • System, dark and light appearance modes • Native macOS interface Rule of Three is made for people who need a small, fast and reliable proportional calculator always at hand.
| 序号 | 名称 | 价格 | 货币 | 地区 |
|---|---|---|---|---|
| 1 | 项目 | ¥ 22 | CNY | 中国 |
