Win Digitra

GOULDIAN LTD

About this app

Win Digitra is a mobile calculator built around one screen for everyday arithmetic. Enter numbers with the keypad, choose an operation, view the current expression, and calculate the result.

🧮 CORE ARITHMETIC

Win Digitra supports four basic operations:

• Addition
• Subtraction
• Multiplication
• Division

Enter digits from 0 to 9 and select +, -, x, or ÷ to build a calculation.

Tap = to calculate the current expression.

After a result appears, you can continue calculating from that value or start entering a new number.

Win Digitra can also chain operations when another operator is selected without clearing the current calculation.

🔢 KEYPAD CONTROLS

The keypad includes:

• Digits 0-9
• +, -, x, and ÷ for basic operations
• = to calculate
• AC to clear the current calculation
• ± to change the sign of the current value
• % for percentage calculations
• . for decimal entry
• ⌫ to remove the last entered digit

The controls are arranged in a four-column keypad.

📊 EXPRESSION AND RESULT

A smaller expression line can show the current value with a selected operator or the completed expression after = is pressed.

The main display shows the current number or calculated result in larger text.

When the displayed value becomes longer, the text size can decrease so more digits remain visible.

🔁 REPEATED OPERATION

After using =, press = again to repeat the previous operation with the previous operand.

You can also continue the next calculation from the displayed result or start entering a new value.

🔍 OPERATOR FEEDBACK

When an operator is selected and the calculator is waiting for the next number, the active operator is highlighted on the keypad.

This shows which operation is currently selected.

⚠️ INPUT AND ERROR HANDLING

Numbers can include decimal values ​​through the decimal key.

The ± control changes the sign of the current value, and % is available for percentage calculations.

If division by zero is attempted, Win Digitra displays an error message instead of a numeric result.

The backspace control removes the latest entered digit.

AC clears the current calculation state.

✨ VISUAL STYLE

Win Digitra uses a dark interface with purple and cyan accent colors.

Utility controls, operator controls, and the equals button use different visual treatments.

Buttons provide press feedback when tapped.

The calculator is shown in a portrait layout with the display above the smoke