Calculator

DFL INC.

Contains adsIn-app purchases

About this app

A full-fledged calculator app equipped with all the functions necessary for practical work.
This calculator app is packed with all the necessary practical functions, including all four arithmetic operations, tax calculation, memory, grand totals, and percentage calculations. The intuitive button layout makes it easy for anyone to start using it right away.

■ Basic Functions

- Arithmetic operations (addition, subtraction, multiplication, division)
- Up to 12-digit numeric input (decimal point supported)
- 3-digit comma-separated display
- Backspace to correct input
- Sign inversion (+/-)
- CE/CA integrated clear (clear input with one click, clear all with two clicks)

■ Tax Calculation

- Tax Included Button: Instantly displays the displayed value plus the tax rate
- Tax Excluded Button: Instantly calculates the tax-excluded amount from the tax-included amount
- Tax rate can be freely set from 0.00% to 100.00% (default 10%)

■ Memory Function

- M+: Adds the displayed value to memory
- M-: Subtracts the displayed value from memory
- RM: Recalls the memory value
- CM: Clears memory
- Displays the "M" indicator while memory is in use

■ Grand Total (GT)

- Automatically accumulates calculation results when an equal result is confirmed
- Check the accumulated value at any time with the GT button
- Easily calculate the sum of multiple calculation results

■ Percentage Calculations

・Single Percentage: Value divided by 100 (e.g., 200% → 2)
・Addition/Subtraction Percentage: Premium/Discount Calculations (e.g., 200 + 10% → 220)
・Multiplication/Division Percentage: Component Ratio Calculations (e.g., 200 × 10% → 20)

■ Calculation History

・Automatically saves formulas and results with date and time stamps
・Quickly check past calculations from the history list

■ Calculation Mode Selection

・Multiplication/Division First Mode: Calculates according to mathematical rules (e.g., 1 + 2 × 3 = 7)
・Entry Order Mode: Calculates in the order entered (e.g., 1 + 2 × 3 = 9)

■ Decimal Point Settings

・Specify the number of decimal places from 0 to 11
・Select from "Truncate," "Round Up," or "Round Nearest" for rounding
・Ideal for accounting and estimate creation

■ 8 Theme Colors
・The free version offers two color options: black and white
・The premium version offers black, white, and Choose from eight colors: red, orange, blue, purple, green, and brown.
- Customize your favorite colors to make daily calculations more fun.

■ Touch Sounds

- Turn button click sounds on or off.

■ Premium Features (In-App Purchase)

The following additional features are unlocked by purchasing:

- Ad-Free: Completely removes banner ads.
- All Theme Colors: Select from all eight color themes.
- Expanded Digit Count: Increases the maximum number of digits from 12 to 20.
- Real-Time Formula Display: Displays the formula as you enter it.
- Display Copy: Press and hold the display to copy the calculation result.
- History Copy: A copy icon appears in the calculation history.
- History Export: Export calculation history to text or CSV format.
- History Swipe: Swipe left or right to delete individual history entries and restore data.
- Expanded History Storage: Increases the maximum number of saved entries from 25 to 500.

■ Other Features

- Auto-size: Automatically adjusts font size even when displaying large numbers of digits.
- Offline: Full functionality works offline (network usage only when displaying ads).
- Compatible with Android 8.0 and above.

From everyday shopping to accounting and clerical work, Calculator will help you with all your calculations.

What’s new

日本語/English切替機能追加し多言語対応しました