Miss your old calculator? Calculate like it's the 90's again!

Sometimes you just want your old calculator back,
with RTRO-CLC2 no equation is boring again.

• Touch Bar support
• Tape / History View
• Click to copy result
• 7-segment digits
• Iteration with the "=" key
• Satisfying click noises
• Memory bank
• Ad-Free

Supported math operations:

• Add
• Subtract
• Multiply
• Divide
• Square roots

What’s New

Version 1.2.9

- Sound toggle button for turning off sound effects, moved to native AVAudioPlayer for all sounds
- Tape / History View improvements - resizable window, adaptive columns
- Fixed a bug where calculator buttons would not display in Touch Bar due to audio context

Ratings and Reviews

3.8 out of 5
5 Ratings

5 Ratings

hmplfh2006 ,

Simple good free calculator

I have been using this app for months. It is simple and not meant to be complex with tons of features. Plus, remember it is free! I am well-satisfied with the app. I use it daily. A day ago, the developer released an update. I would give it 5 stars if the running tape was on the main screen instead of having to use the History button. I am so glad that the developer is still updating this app. It is also, Catalina compatible.

Developer Response ,

Hi, there!

Thank you for the review!

An in-calculator running tape has been in plans since early in the development stage,
it might make it in one of the next updates. :)

tylowill ,

Great Calc

This seems to function well - the "tape" is viewable with (apple Y) or you can click View - History.

Only huge problem is the annoying sounds - why can't I turn these off?

Small issue is the non-flat UI but that is a non-important taste issue.

Can't complain to much because the app is free.

Developer Response ,

Hi there!

Thanks for the suggestions!

Turning off the sounds might get in the next update!

Flat-UI is hard to turn into a retro esthetic, but maybe sometime in the future RTRO-CLC will include plans for themes and particulary ones for OLED screens.

Thank you for the rating! :)


Added a button for toggling sounds 🙂

Abitofgeek ,

Exactly what I was looking for

An easy to use, pleasant to look at calculator app that shows me the history of my input! Now I can finally double check my work. Thank you!

App Privacy

The developer, Oto Insa, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer