Twin-Calc 2.6.4

A straightforward and user-friendly calculator application that integrates two calculators into a single interface.

The calculators are arranged side by side in landscape mode and vertically in portrait mode.

In addition to conducting separate calculations with each calculator, the app allows for easy copying and pasting of calculation results with a single touch, enhancing usability during multiple calculations.

An ad-supported version is also available. Users are encouraged to try it out before making a decision.

• Calculation results can be copied and pasted effortlessly between the two calculators.
• Transfer calculated results from one calculator to the other seamlessly with a single touch.
  • Press the "→" key to input the left calculator's result at the end of the formula on the right calculator.
  • Press the "←" key to input the right calculator's result at the end of the formula on the left calculator.
• Basic arithmetic operations (addition, subtraction, multiplication, and division) are supported. Multiplication and division take precedence over addition and subtraction in sequence.
• The entered formula is displayed below the result for easy verification of operations.
• Calculation results can be copied to the iPhone's clipboard, enabling easy pasting into other applications to prevent transcription errors.

Example of Use:

While shopping, users can efficiently determine which product offers a better deal between one priced at 988 yen for 3 pieces and another priced at 1245 yen for 4 pieces:

1. Use the left and right calculators to calculate the unit price of each product (unit price = product price ÷ number).
2. Subtract the unit prices by tapping the "- key" and "arrow key" on either calculator to find the price difference.

Limitations:

• The app can calculate answers up to 9 digits, with a minimum value of 0.000000001.
• If division by zero is performed, it will correctly display as ∞, but the calculator will show "0".

Note:

The free version is downloadable from: T Calc Lite - App Store Link