Kalkyl 4+

Just a really good calculator

nordic io

    • 4.5 • 696 Ratings
    • Free
    • Offers In-App Purchases


Kalkyl is just a really good calculator.

• Optimized for quick calculations.
• Collaborate on documents.
• Simple and intuitive design.
• Haptic feedback (on supported devices).
• Undo and Redo support (shake to Undo).
• Keyboard trackpad mode using 3D Touch, or Haptic Touch (on supported devices), or two fingers on iPad.
• Pointer interactions on iPad.
• Basic graphing.
• Properly localized number formatting.
• App-wide dynamic type support.
• Accessible.

Terms of Use:

What’s New

Version 3.0.3

Fixes a rare issue where fractions with special properties could result in repeated decimals being presented with the wrong first or last digit

Ratings and Reviews

4.5 out of 5
696 Ratings

696 Ratings

Alternate Subwoofers ,

One of the best, but please have an option for dark mode even when iOS 13’s dark mode is off

This is one of the most straightforward and useful calculator apps I’ve ever used, but can you guys please add back an option for the Kalkyl app to be dark mode independently of iOS 13’s Light or Dark mode?

Prior to iOS 13 the Kalkyl app always had a dark background and I loved it but now it changes to a light background based on the system’s dark or light mode.
The light mode makes the app less appealing and harder to use for me, so I would appreciate it if we got a manual toggle for independent dark mode on Kalkyl.

Developer Response ,

Thank you for feedback!
There's now a system theme override in settings. 🤞🏻

I don't do thismuch ,

Great App One Flaw

Overall this is a great calculator that I would definitely recommend, especially because it’s free! As another reviewer said I liked it so much that I deleted the default one. The only flaw is that the shake to undo is finicky at best. Other than that, amazing app!

Developer Response ,

Thank you for your review! 😊

I believe the shake to undo issues you were seeing got fixed in the 2.6 update. If not please reach out via the app.

i like it... A lot! ,

Favorite calculator for classes

I used this calculator almost everyday in my physics class. It helped a lot on class assignments when my actual calculator went missing.
If it wasn’t as power hungry on the device (I think that’s iOS though, since that’s also present in the stock app to a slightly lesser extent), it’d be even better. I do kinda wish there was a landscape view similar to the iPad’s implementation of orientation on larger iPhones. Overall though, it’s my favorite calculator app on iOS!

Developer Response ,

Thank you! 🙏🏼

I’ve been looking into the power consumption and everything points to very low energy usage in 2.7.

The only thing I can find is if you’re using an iPhone with an LCD-display then the dark colors used actually draw more power than light colors, and it could be that the display is on for extended periods of time while studying. I’d recommend turning the display off when you are done with the calculations, and see if that helps. Maybe it helps, maybe it doesn’t. 😊

If the problem persists (or if anyone else reading this is seeing the same thing) please check the Settings app > Battery and see how much Kalkyl really draws. Then contact support at contact@nordic.io and we’ll figure it out together. 🤞🏻

App Privacy

The developer, nordic io, 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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