関数電卓 - 式が見えて直せる

You can correct calculations midway through while viewing the formula. A one-time purchase calculator that supports history, functions, and engineering notation.

See your formula. Edit it midway.

FormulaCalc is a highly functional scientific calculator that lets you see your entered formulas as you use it. There's no need to re-enter numbers or operators. Simply move the cursor to the desired position and edit it on the spot.

Main Features

• Arithmetic operations, exponents, modulo, factorial, percentage

• sin, cos, tan, inverse trigonometric functions, hyperbolic functions

• Function keys for logarithms, square roots, cube roots, etc.

• DEG/RAD switching

• Preview of results during calculation

• Undo/Redo

• Ans, MC/MR/M+/M−

• Up to 500 calculation history entries

• Search history, favorites, reuse formulas, insert results

• Automatic/Exponential/Engineering notation and significant digit settings

• Light/Dark display

• Copy and share formulas and results

Formulas, history, and settings are saved on your device. There are no ads or proprietary behavioral tracking, and the app itself does not require internet access.

This is a one-time purchase app with no additional charges or subscriptions.