Calcularium vs Uno Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calcularium
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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Here are Calcularium users describing the app: "You know how you're slowly calculating something and you're in the middle of an expression so you want to know how you're doing? Yeah well that's real time calculation and I couldn't find an app that did it right, tried dozens of them and still nothing, BUT this app does it the perfect way, actually the way it should work, this app is definitely worth it, thanks a lot devs, big love. Edit: OMG this is better than I thought, I just noticed the tutorials given and this app has more functions than I noticed, this is super amazing, devs, you're the best." – Anton31kah10 "I mean it literally. The tiny app packs impressive amount of useful stuff for a mere calculator. I would say it’s like mobile Excel. Math functions, unit conversion, currency exchange rates, and, even simple programmers functions. I wrote a small formula to calculate tips for our county. Easier and better than any tipping app! I hope the developer expands these functions for Shortcuts and Siri. This would be real killer app! Thanks guys!" – Z!KeepeR "What looks like just a clean calculator app is in fact a powerhouse full of advanced features you could only get with custom Excel mega sheet." – AlexDbk "You can find a lot of different kind of calculators but this is something completely new and awesome. It is not an another boring calculator. This is your real helper if you need to calculate something more than 2+2 :). Tutorial is great and helpful. History, customizable functions, variables, converter and much more. Great! It is definitely the next generation of the regular things." – Lysyk CALCULARIUM FEATURES: • Voice-controlled, backed by Siri • Script and Photo input modes • Reactive Calculations • Multi-Level Sub-Calculations with No Limits • History: Editable and Reusable • Self-Explanatory Naming for Every Component • Functions and Reusable Expressions • Constants and Reusable Numbers • Multiple Reversible Conversions (350+ units and 160+ currencies) • Advanced Search • Built-In Scientific Functions CONTROL BY VOICE Calcularium is also can be controlled by voice and has the ability to understand spoken math questions and calculate the answer. Tell it: "6 bottles by 15 dollars” - and it will give you the right result! It works by using verbal numbers and mathematical operations. FLUID DESIGN The design language of the Calcularium is based on tokens. All tokens are of the same structure: the left part shows a type of the element, the right part has a result or an entered value and its name on top. In addition to tokens there are pure numbers and math operators. HISTORY You can set an expression as a variable with the goal to use it afterwards in other expressions and give every component a clear name to recall what it stands for easily. Create a calculation, and next time you reuse it from History section, every component will clearly speak to you. Almighty Version is a recurrent subscription with such options: 1 month, 6 month and 1 year. Confirmation of purchase is required to start free one week trial period. The subscription begins immediately. Payment will be charged to iTunes Account at the end of the trial period. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. Any unused portion of a free trial period will be forfeited when the user purchases a subscription. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Privacy Policy https://www.invoodoo.com/privacy-policy Terms of Use https://www.invoodoo.com/terms-of-use
Uno Calculator
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.
- Arithmetic calculations
- Unit conversions
- Size measurements
- Temperature conversions
- Speed calculations
- Energy calculations
- Currency exchange
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The powerful Uno Calculator receives a makeover from Uno Platform with a wide variety of features. From calculations to measurements of size, temperature, speed, energy, currency and more, the calculator is a powerful one-stop-shop for all calculation-related needs.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Calcularium | Uno Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.2K ratings) | 4.6 (116 ratings) — better |
| Positive reviews | 67.3% of reviews | 73.2% of reviews — better |
| Number of ratings | 2.2K — better | 116 |
| Update frequency | Fortnightly — better | Every 5 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 18.0 | 14.2 — better |
| Further details — not scored | ||
| Size | 52 MB | 96 MB |
| Age rating | 4+ | 4+ |
| Developer | InVooDoo LLC | Uno Platform Inc. |
Customer experience
Calcularium
Uno Calculator
User reviews
Calcularium
From 2.2K App Store ratingsWhat we love
- 🚀 Powerful and feature-packed
- 👍 Easy to use with great tutorials
- 🎨 Beautiful and customizable design
- 💡 Innovative features like real-time calculation
- 🙌 Excellent value for money
Room to improve
- 🔍 Confusing or unintuitive interface
- 📢 Excessive advertisements
- 🐛 Calculation errors or inconsistencies
- 🔒 Limited functionality in free version
Uno Calculator
From 116 App Store ratingsWhat we love
- 💰 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
Room to improve
- ⌨️ 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
Bugs and requests
Calcularium
Reported bugs
3 issues- Crashes or freezes on certain devices
- Incompatibility with older iOS versions
- Issues with calculator widget functionality
Requested features
4 requests- 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
Reported bugs
10 issues- 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
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- History not persisting after app closure
- Text rendering issues on larger iPad displays
- Unit conversion errors (volume translated incorrectly in Chinese)
- Slow data entry on macOS Catalina
- Landscape mode layout issues
Requested features
11 requests- 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
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- Sound/click feedback option in settings
- Donation option within the app
- Improved dark mode styling
- Bluetooth keyboard support
- Numeric keypad support for external keyboards
- Currency conversion feature restoration
In-app purchases
Calcularium
- Almighty Version$3.991 Month
- Almighty Version$4.996 Months
- InVooDoo One$5.991 Month
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- Almighty Version$29.991 Year
- Unlock Pro Version$199.99
- Lifetime Almighty Version$199.99
- Remove Ads Only$199.99
Uno Calculator
No in-app purchases








