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devCalc Pro

devCalc Pro

Developers Calculator Pro

39 ratings
30 reviews
🔧 Utilities
📊 Productivity

Archived App (Last seen on 11 Sep 2025)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • March 11, 2013
  • May 15, 2024

Developer

Tamas Rudnai
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About

This app combines engineering, scientific, and programmer calculator functions. It offers easy number base conversion and a unique 'Real Engineering Mode' for human-readable number scaling. Ideal for IT professionals, engineers, scientists, and students.

✓Number base conversion (Binary, Octal, Decimal, Hexadecimal)
✓Real Engineering Mode for human-readable number scaling
✓Extensive functions for scientists and developers
✓Device rotation for landscape mode
✓Swipeable LCD display for color theme changes
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What's New in devCalc Pro

1.8.6

May 15, 2024

Improved external keyboard support & Native Mac version.

User reviews

Most RecentHighest RatedLowest Rated

Awesome

I got this calculator because I needed one that has hex, binary conversion. I am very pleased with devCalc pro. The only improvement I can suggest is to not remove the programmer’s helpful functions in decimal mode. i.e. I can only get OR, NOT, XOR functions when not in decimal mode.
Rwatson58Rwatson58

Perfect with classic Windows’s calculator

Perfect
iLimPhoneiLimPhone

Works great on iOS 14

Glad to have a programming calculator that also works fine with decimal unlike certain hp calculators, and also doesn’t require rpn input. But... no backspace key? Lose a star for that. Added the backspace key. Thanks.
Music ogreMusic ogre

Response from developer

Thank you for your feedback. A new version has been just released which adds the backspace key. Tap once to delete one digit or hold it to auto-repeat, deleting a longer number. When no more digits to delete, it automatically switches back to CE button to delete errors and the entire calculations just like before.

Works great on iOS 14

Glad to have a programming calculator that also works fine with decimal unlike certain hp calculators, and also doesn’t require rpn input. But... no backspace key? Lose a star for that.

Added the backspace key. Thanks.

Unfortunately crashes now under iOS 17.1.1
Music ogreMusic ogre

Response from developer

Thank you for your feedback. A new version has been just released which adds the backspace key. Tap once to delete one digit or hold it to auto-repeat, deleting a longer number. When no more digits to delete, it automatically switches back to CE button to delete errors and the entire calculations just like before.

Finally, an iPhone calculator that does it all. Thank you.

Thank you for a very nicely written calculator app.
wayneatwayneat
See 25 more reviews

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FAQ

What does devCalc Pro do?

devCalc Pro is a versatile calculator that combines engineering, scientific, and programmer functionalities. It allows for easy number base conversions between Binary, Octal, Decimal, and Hexadecimal. A standout feature is its 'Real Engineering Mode,' which displays numbers in a human-readable format, simplifying complex calculations for engineers and scientists.

What are the key features of devCalc Pro?

Key features include seamless number base conversion, a unique 'Real Engineering Mode' for scaling numbers to human-readable formats (e.g., displaying 1,500,000 as 1.5M), extensive functions suitable for scientists and software developers, device rotation for landscape use, and the ability to change the display color theme by swiping the LCD.

Is devCalc Pro free to use?

Yes, devCalc Pro is available for free. The application does not feature in-app purchases or advertisements, providing an uninterrupted user experience for all its functionalities.

Who is the target audience for devCalc Pro?

This application is specifically designed for developers, engineers, scientists, and university students. Its hybrid nature caters to the diverse calculation needs of IT professionals and academic users alike.

How does the 'Real Engineering Mode' work?

The 'Real Engineering Mode' simplifies the display of large or small numbers. By tapping on prefixes like Kilo, Mega, Giga, Milli, Micro, or Nano, the calculator automatically scales the number to a human-readable format (e.g., 500k * 3 displays as 1.5M). The app retains the high-precision value, allowing you to switch views or turn the mode off to see the full decimal digits.