Calcularium vs Duel
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
Duel
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Duel-Desk combines everything you need for your Yu-Gi-Oh duels. Use the simple and clear life points counter during your duels. Simulate your coin and dice rolls and even track the placement of your spell counters. After the duels, you can view each player's stats in beautiful charts and tables and keep track of who among your friends is performing the best. --> Fight heated duels --> Personalize your players --> Dice and coin simulator --> Simple and efficient design --> View the statistics of all players --> Create tournaments and let your friends join them --> Multiple tournament modes available --------------------------------------- Create exciting tournaments In the tournament mode you can create your own tournaments with different modes. The tournaments can then be played via a smartphone, but your teammates can also join using their mobile phones, allowing you to play multiple duels at the same time. Customize your players You can assign a name and a player picture to each player, which will be displayed during a duel. Synchronize your stats with those of your friends You accompanied a duel with a friend only with your smartphone, but your friend wants to see the stats on his account too? No problem! Quickly and easily synchronize all your stats with those of another account and share your successes with your friends. Download now and show the others that YOU are the king of games!
Screenshots
Verdict
The clearest difference is in-app purchases: Duel at none against Calcularium's 7. Duel also leads on iOS requirement (13.0 vs 18.0). Calcularium's advantage is device support. On price 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. Duel asks for nothing beyond the download.
| Parameter | Calcularium | Duel |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.2K ratings) — better | — |
| Positive reviews | 67.3% of reviews | — |
| Number of ratings | 2.2K — better | — |
| Update frequency | Fortnightly | — |
| Ads | Yes | — |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | — |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 52 MB | 93 MB |
| Age rating | 4+ | 4+ |
| Developer | InVooDoo LLC | Maximilian Hemme |
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
Duel
Not enough reviews yet to summarise bugs or requests.
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
Duel
No in-app purchases









