Calcularium

Calcularium

Reactive Advanced Calculator

2.2K ratings
49 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • February 26, 2014
  • December 29, 2025

Features

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About

This app offers real-time calculations, allowing you to see results as you type. It goes beyond basic arithmetic with advanced functions, unit conversions, and customizable expressions, acting as a powerful helper for complex calculations.

Reactive Calculations
Voice Control (Siri)
Script and Photo Input
Multi-Level Sub-Calculations
Editable History
Unit and Currency Conversion
Customizable Functions
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What users say

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What's New in Calcularium

3.6.34

December 29, 2025

• bugfixes and improvements

Subscription plans

Almighty Version

1-Year subscription

$29.991 Year
How to cancel Calcularium subscription ⁉️
1

In-App Purchases

$199.99

Unlock Pro Version

No limits and no advertisements.

User reviews

Awesome app

Such a great way to keep a roster of my returns. Thanks 🙏

Best calculator I have run into.

Not only only this app a power house with functions, expressions, in addition to simple calculations, it is also easy to use. Comes with a large collection of tutorials to help users get the most out of the many features this app provides. I love that I paid for the Almighty version awhile back and they haven’t tried to squeeze more money from me. There is definitely honor in this company. They do offer subscriptions that provide many apps, I may consider trying them as the need arises.
Thanks for the wonderful product and good business practice.
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Too many ads

Too many ads

A calculator that doesn’t quite do calculations correctly

Calculator doesn’t work well with adding subtracting of the same calculation. Have to add numbers only or subtract them only. Heaven forbid you want to divide! Horrible

The most challenging yet useful calculator I’ve ever owned

It makes my math so much simpler.

Developer apps

User experience

🐞

Reported Bugs

3 issues

Crashes or freezes on certain devices

Bug

Incompatibility with older iOS versions

Bug

Issues with calculator widget functionality

Bug

Requested Features

4 requests

Add basic calculator functions like equal and clear buttons

Feature

Improve unit conversion and scientific functions

Feature

Integrate with Shortcuts and Siri

Feature

Provide more customization options

Feature

FAQ

What does Calcularium do?

Calcularium is an advanced calculator app that provides real-time calculations, meaning you see results as you input your expression. It offers a wide range of features beyond basic arithmetic, including unit and currency conversions, customizable functions, and the ability to control it via voice commands.

What are the key features of Calcularium?

Key features include reactive calculations, voice control powered by Siri, script and photo input modes, multi-level sub-calculations, an editable and reusable history, customizable functions, constants, and over 350 unit and 160 currency conversions.

How much does Calcularium cost?

The app is free to download and use, with an optional 'Almighty Version' available as a recurrent subscription for additional features. The description mentions this subscription is available on a monthly basis.

What devices is Calcularium compatible with?

While specific device compatibility isn't detailed, the app is described as a mobile application and mentions Siri integration, suggesting compatibility with iOS devices that support Siri. Users can input calculations via voice, script, or photo.

What are some common use cases for Calcularium?

Common use cases include calculating tips, performing complex mathematical expressions in real-time, converting units for measurements or currencies for travel and finance, and creating reusable formulas for recurring calculations. It can also be used for programmer functions.