Nixie Calculator 4+

A Beautiful Retro Calculator


    • 4.6 • 9 Ratings
    • Free



Showcasing the beauty of Nixie tubes that were used from the 1950's and are still available until today.

Nixie tubes use layered vacuum tubes to show digits and have a characteristic orange glow. Nixie Calculator provide basic arithmetic functions consistent with the original devices - with a few modern additions.

Features of Nixie Calculator:
• Menu bar item. Can be used to easily launch the full Calculator or a Menu Bar version.
• Paper tape to display what you have entered. Can be copied, saved or printed
• Paper tape can be used to paste results back into calculations
• Conversions for common measures
• Copy and paste entries
• International number formats
• Constants
• Exponential modes
• RPN Mode
• Dark mode support
• Can be resized

Preferences available:
• Color schemes
• Calculator size (can also be resized by dragging on the window)
• Rounding options - including showing trailing zero's
• Scientific and engineering exponential modes
• Use classic Nixie font for the display
• Classic key font
• Show menu bar item
• Dark mode support
• Separators embedded with the digits
• Classic pyramid and illuminated thousand separators
• Classic red filter
• Always on top
• Accessibility Options
• Keyboard Shortcuts
• Key press beep
• Button assignment can be changed

The calculator is a rounding or truncating type to fit numbers into the fixed display.

Please enjoy this calculator that combines one of the first display technologies with state of the art in PC technology.

What’s New

Version 1.91

RPN Mode is now available in the Status Bar Menu calculator (requires MacOS Big Sur - Version 11 or later).

Minor updates and bug fixes.

Ratings and Reviews

4.6 out of 5
9 Ratings

9 Ratings

UhClem2K ,

Nixie is nifty!

Nixie is a basic calculator and that's exactly what I was looking for to replace the widget that went away with Catalina. It looks good and does everything I need...which includes a memory function. I didn't want the clutter of a scientific calculator (but the addition of an exponent key would not be unwelcome).

Good job.

Developer Response ,

Thanks. You can simply press E (lower case - e) to enter an exponent in either the small or the scientific mode.  

v1.74 that is about to be released includes an option in preferences to add your own keyboard shortcuts for all the functions available. You can see all the existing shortcuts in this preference screen.

@Tuan le ,


very good it keeps last data

Mikezza ,

Reliable- Easy to Use

Reliable - Easy to use and paper tape works well. Good Layout.

App Privacy

The developer, UNB SYSTEMS PTY LTD, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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