# Calcularium vs Uno Calculator

The clearest difference is in-app purchases: Uno Calculator at none against Calcularium's 7. Uno Calculator also leads on ads (none vs shown) and iOS requirement (14.2 vs 18.0). Calcularium's advantage is update cadence (fortnightly vs every 5 months) and ratings volume (2.2K vs 116). On price, rating, review sentiment and device support there is nothing between them.

Both are free to download. Calcularium sells 7 in-app purchases, starting at $3.99 per month. Uno Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Calcularium against 4.6 for Uno Calculator. That said, the two scores are not equally well evidenced: Calcularium has 2.2K ratings behind it against 116, so its average is the more settled of the two. Written reviews are what separate them: 67% of Calcularium's written reviews are positive against 73% of Uno Calculator's.

Calcularium ships an update fortnightly, Uno Calculator every 5 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calcularium | Uno Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.2K ratings)](https://appshunter.io/ios/app/calcularium/id824113384/reviews) | **[4.6 (116 ratings)](https://appshunter.io/ios/app/uno-calculator/id1464736591/reviews)** |
| Number of ratings | **2.2K** | 116 |
| Positive reviews | 67.3% of reviews | **73.2% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 52 MB | 96 MB |
| Requires iOS | 18.0 | **14.2** |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [InVooDoo LLC](https://appshunter.io/developer/1173246186) | [Uno Platform Inc.](https://appshunter.io/developer/1617866832) |

## What reviewers say

### Calcularium

[App page](https://appshunter.io/ios/app/calcularium/id824113384)

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.

**Highlights:** Reactive Calculations, Voice Control (Siri), Script and Photo Input, Multi-Level Sub-Calculations, Editable History, Unit and Currency Conversion, Customizable Functions

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Almighty Version | $3.99 | per month |
| Almighty Version | $4.99 | per 6 months |
| InVooDoo One | $5.99 | per month |
| Almighty Version | $29.99 | per year |
| Unlock Pro Version | $199.99 | one-time |
| Lifetime Almighty Version | $199.99 | one-time |
| Remove Ads Only | $199.99 | one-time |

**What reviewers like**

- 🚀 Powerful and feature-packed
- 👍 Easy to use with great tutorials
- 🎨 Beautiful and customizable design
- 💡 Innovative features like real-time calculation
- 🙌 Excellent value for money

**What reviewers complain about**

- 🔍 Confusing or unintuitive interface
- 📢 Excessive advertisements
- 🐛 Calculation errors or inconsistencies
- 🔒 Limited functionality in free version

**Reported bugs**

- Crashes or freezes on certain devices
- Incompatibility with older iOS versions
- Issues with calculator widget functionality

**Requested features**

- Add basic calculator functions like equal and clear buttons
- Improve unit conversion and scientific functions
- Integrate with Shortcuts and Siri
- Provide more customization options


### Uno Calculator

[App page](https://appshunter.io/ios/app/uno-calculator/id1464736591)

This app offers a comprehensive suite of calculation tools, handling everything from basic arithmetic to complex unit conversions. It supports measurements for size, temperature, speed, energy, and currency, making it a versatile solution for diverse needs.

**Highlights:** Arithmetic calculations, Unit conversions, Size measurements, Temperature conversions, Speed calculations, Energy calculations, Currency exchange

**In-app purchases:** none

**What reviewers like**

- 💰 Completely free with no ads or in-app purchases
- 🎨 Clean, minimalist, and intuitive user interface
- 🔧 Multiple calculator modes (standard, scientific, programmer)
- 📊 Useful unit conversion features
- 📜 Helpful history and memory panes for tracking calculations

**What reviewers complain about**

- ⌨️ No keyboard input support on Mac or iPad (major recurring complaint)
- 📍 Calculator buttons positioned on left side (inconvenient for right-handed users)
- 📜 History pane cannot be hidden or minimized
- ⏱️ Slower app launch time compared to stock calculator
- 🐢 Laggy performance on macOS with slow button responsiveness

**Reported bugs**

- Standard calculator mode doesn't follow order of operations (1+2*3 = 9 instead of 7)
- Buttons disappear while using on iPad
- Apple Pencil input causes buttons to blend into background
- Slow key responsiveness on macOS
- Numeric keypad input not recognized from Apple keyboard

**Requested features**

- Keyboard input support for Mac and iPad (most requested)
- Copy and paste functionality for results and formulas
- Option to reposition calculator buttons to right side
- Ability to hide or collapse history pane
- Persistent history that saves after app closes


## Frequently asked questions

### Is Calcularium free?

Calcularium is free to download, with in-app purchases available.

### Is Uno Calculator free?

Uno Calculator is free to download, with no in-app purchases.

### Which has better reviews, Calcularium or Uno Calculator?

Uno Calculator is rated higher. Calcularium averages 4.6 out of 5 from 2.2K ratings, while Uno Calculator averages 4.6 from 116 ratings.

### Do Calcularium or Uno Calculator have ads?

Calcularium shows ads; Uno Calculator does not.

### Which is updated more often, Calcularium or Uno Calculator?

Calcularium ships an update fortnightly, and Uno Calculator every 5 months. Most recently, Calcularium was updated on October 29, 2026 and Uno Calculator on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*