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AppCorpus
Market US

Kalkyl

by nordic io

iPhone · iPad

Active Last checked 7 Aug 2026

App Store ↗

Quick verdict

What it is
Store information collected; independent summary not yet available.
At a glance
  • Free to download
  • In-app purchases

Categories and search queries

Official categories

AppCorpus categories

Key functions

Function Availability Access Scope Evidence
Free app Yes Free — Store published
In-app purchases Yes Limited free — Store published

Screens

App Store

17 store screenshots

Kalkyl ipad screenshot 1
Kalkyl ipad screenshot 2
Kalkyl ipad screenshot 3
Kalkyl ipad screenshot 4

Pricing & paywalls

App Store

  • Kalkyl Pro — $4.99

Last verified 7 Aug 2026

Ratings & reviews

App Store

4.5 714 ratings · App Store

  1. 4/5One 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.

    Alternate Subwoofers · 7 Aug 2026

  2. 4/5Great 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!

    I don't do thismuch · 7 Aug 2026

  3. 5/5Favorite 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!

    Cer0gic · 7 Aug 2026

  4. 5/5Nice app, screenshots misleading

    The screenshots in the App Store for version 2.2 refer to graphs that appear with x axis min value 0 and max value 1, listed as 0, -5, 5, 1. I suggest zooming out for the screenshot so that it shows the correctly graphed values (-10, -5, 5, 10). I almost didn’t download the app because it seemed so fundamentally flawed in the screenshots. Once I did download, I see that it graphed correctly. Nice app.

    FromBenjamin · 7 Aug 2026

  5. 5/5Perfect

    I very rarely leave a written review but this Calculator has single handendly improved the quality of my life out of any app on my phone. It is SO useful to math out stuff on the go as well as having a graphing calculator built in. Thank you so much for making this <3

    okonkwolooser · 7 Aug 2026

Privacy & accessibility

App Store

Privacy

  • Data Not Collected Developer declared

Accessibility

No accessibility labels collected yet.

Versions

App Store

  • 2.5

    • Keyboard improvements. • Numbers line-break properly. • Multitasking support on iPad. • Improved graphing • Localized to 9 languages - including the support section. • Accessibility - VoiceOver, fine-tuned interactions with the graph, touch-typing support on the custom keyboard, behaves well under dynamic invert colors, reduce motion, ... • Privacy-mode - moves the result to previous answer after 15 minutes and hides the current calculation in the App Switcher.

  • 2.5.1

    Adds support for the latest devices.

  • 2.5.2

    Support for the latest devices.

  • 2.6

    • 3D Touch “tap” on keyboard for word selection. • Pan + tap (3 touches in total) for word selection on devices without 3D Touch. • Brand new math tokenizer. • Use percent with multiplication and division. • Undo/Redo improvements. • Improved external keyboard support. • Home-screen Quick Action that clears the previous calculation before launching. • Alternate smoothly between zooming and translation gesture while graphing. • Basic Siri shortcut integration.

  • 2.7

    • Brand new expression parser - enabling a whole range of new features. • Exponents are rendered as superscripts. • Square and cube roots are rendered with overbar. • Improved graphing with sharper text, smooth resizing animation and dynamic type support. • Nudges, as visual instructions, for some frequently asked questions about the interface. • Indian numbering system support - groups numbers like 1,00,00,000. • Translated to even more languages. • Performance improvements - now using fast vectorized graph point calculations. • ... and many, many other tweaks and improvements.

  • 2.7.1

    Bug fixes

  • 2.8

    Kalkyl becomes even more Pro • UI improvements. • A new Light appearance that’s integrated with the system-wide Dark mode (iOS 13+). • Improved Haptics. • You can now disable nudges under Settings. The new Kalkyl Pro subscription also unlocks: • Length and time unit conversions. • A custom light app icon. • Always up-to-date currency conversions. • Aggregate unit conversions, such as USD/ft² to EUR/m². • Calculation history. • … and there's more to come.

  • 2.8.1

    Fixes a bug on iOS 11.

  • 2.8.2

    Kalkyl becomes even more Pro • UI improvements. • A new Light appearance that’s integrated with the system-wide Dark mode (iOS 13+). • Improved Haptics. • You can now disable nudges under Settings. • Floating keyboard support on iPad. • Custom, fine-tuned trackpad-mode for iPhones with Haptic Touch. The new Kalkyl Pro subscription also unlocks: • Length and time unit conversions. • A custom light app icon. • Always up-to-date currency conversions. • Aggregate unit conversions, such as USD/ft² to EUR/m². • Calculation history. • … and there's more to come.

  • 2.8.3

    In 2.8.3: • Greatly improved Light theme. • Optimized pipeline to remove all input lag. In 2.8: Kalkyl becomes even more Pro • Dark- or Light-mode, with system override (iOS 13+). • UI improvements. • Improved Haptics. • You can now disable nudges under Settings. • Floating keyboard support on iPad. • Custom, fine-tuned trackpad-mode for iPhones with Haptic Touch. The new Kalkyl Pro subscription also unlocks: • Length and time unit conversions. • A custom light app icon. • Always up-to-date currency conversions. • Aggregate unit conversions, such as USD/ft² to EUR/m². • Calculation history. • … and there's more to come.

  • 2.8.4

    In 2.8.4: • Trackpad support (iOS 13.4+). • Fixes an issue with Dark- and Light-mode system override (iOS 13+). In 2.8.3: • Greatly improved Light theme. • Optimized pipeline to remove all input lag. In 2.8: Kalkyl becomes even more Pro • Dark- or Light-mode, with system override (iOS 13+). • UI improvements. • Improved Haptics. • You can now disable nudges under Settings. • Floating keyboard support on iPad. • Custom, fine-tuned trackpad-mode for iPhones with Haptic Touch. The new Kalkyl Pro subscription also unlocks: • Length and time unit conversions. • A custom light app icon. • Always up-to-date currency conversions. • Aggregate unit conversions, such as USD/ft² to EUR/m². • Calculation history. • … and there's more to come.

  • 2.8.5

    In 2.8.5: • Fixes a few issues on iPad. In 2.8.4: • Trackpad support (iOS 13.4+). • Fixes an issue with Dark- and Light-mode system override (iOS 13+). In 2.8.3: • Greatly improved Light theme. • Optimized pipeline to remove all input lag. In 2.8: Kalkyl becomes even more Pro • Dark- or Light-mode, with system override (iOS 13+). • UI improvements. • Improved Haptics. • You can now disable nudges under Settings. • Floating keyboard support on iPad. • Custom, fine-tuned trackpad-mode for iPhones with Haptic Touch. The new Kalkyl Pro subscription also unlocks: • Length and time unit conversions. • A custom light app icon. • Always up-to-date currency conversions. • Aggregate unit conversions, such as USD/ft² to EUR/m². • Calculation history. • … and there's more to come.

  • 2.8.6

    • Improved initial scaling of viewport when graphing functions with extreme derivatives, e.g. 1/x and tan x. • Fixes an issue where certain small numbers to an intermediate power could fail to evaluate. Previous updates: • Trackpad support (iOS 13.4+). • Greatly improved Light theme. • Optimized pipeline to remove all input lag. • Fixes a few issues on iPad. • Fixes an issue with Dark- and Light-mode system override (iOS 13+). In 2.8: Kalkyl becomes even more Pro • Dark- or Light-mode, with system override (iOS 13+). • UI improvements. • Improved Haptics. • You can now disable nudges under Settings. • Floating keyboard support on iPad. • Custom, fine-tuned trackpad-mode for iPhones with Haptic Touch. The new Kalkyl Pro subscription also unlocks: • Length and time unit conversions. • A custom light app icon. • Always up-to-date currency conversions. • Aggregate unit conversions, such as USD/ft² to EUR/m². • Calculation history. • … and there's more to come.

  • 2.8.7

    • Improved initial scaling of viewport when graphing functions with extreme derivatives, e.g. 1/x and tan x. • Fixes an issue where certain small numbers to an intermediate power could fail to evaluate. • Fixes an issue where results could be rounded wrong. Previous updates: • Trackpad support (iOS 13.4+). • Greatly improved Light theme. • Optimized pipeline to remove all input lag. • Fixes a few issues on iPad. • Fixes an issue with Dark- and Light-mode system override (iOS 13+). In 2.8: Kalkyl becomes even more Pro • Dark- or Light-mode, with system override (iOS 13+). • UI improvements. • Improved Haptics. • You can now disable nudges under Settings. • Floating keyboard support on iPad. • Custom, fine-tuned trackpad-mode for iPhones with Haptic Touch. The new Kalkyl Pro subscription also unlocks: • Length and time unit conversions. • A custom light app icon. • Always up-to-date currency conversions. • Aggregate unit conversions, such as USD/ft² to EUR/m². • Calculation history. • … and there's more to come.

  • 2.8.8

    • Improved pointer interaction support (iPadOS 13.4+). • Graph styling improvements.

  • 2.8.9

    Bug fixes and improvements.

  • 2.9

    • The Split View and Slide Over experience on iPad is greatly improved! • Animated graph transitions. • Much better result formatting. • Repeated decimals - 1/6 is 0.1(6) and not 0.166 666 6667. • Improved responsiveness of the keyboard. • Symbolic differentiation (requires Kalkyl Pro). Note: Animated Graphs can be disabled with Reduce Motion.

  • 2.9.1

    Bug fixes • The graph doesn't jump ever so slightly at the end of a gesture. • With Dark-/Light-mode override, symbols could hide when erasing. • The Russian rouble tanked so hard that it brought Kalkyl down with it.

  • 2.9.2

    Bug fixes • The wrong sign of ∞ could be shown

  • 3.0

    • Kalkyl Pro includes Collaborative Documents - supporting sharing, multi-step calculations, up-to-date currency, and unit conversions with dimensional analysis. • Redesigned keyboard. • New search filter in the unit picker. • Improved unit suggestions. • Loads of improvements, bug fixes, and optimizations throughout the app. • ... and last, but not least - support for the latest OS versions.

  • 3.0.1

    Bug fixes

  • 3.0.2

    Support for the latest operating systems

  • 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

  • 3.0.5

    With this release Kalkyl Pro is made free and available for every one of you! New features include: • Unit conversions with complex units – from EUR/m² to USD/ft² or m/s to mi/h with up-to-date currencies • Collaborative Documents – allowing nested and dependent expressions and sharing with friends • Symbolical Differentiation – when you just can't remember what d/dx of √cos (x²) is • … last but probably the least: The Light app icon

  • 3.0.6 · 18 Jul 2025

    Kalkyl Pro is still free and available for every one of you! Fixes a bug in the display (not calculation) of repeated decimals of rationals of a certain rare format.

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Last verified
7 Aug 2026
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