# Math Duel vs Circle and Sphere Pro

Math Duel and Circle and Sphere Pro both sit at 5.0 stars, but that hides the real split: 100% of Math Duel's written reviews are positive against 67% of Circle and Sphere Pro's. Math Duel also leads on price ($1.99 vs $2.99) and iOS requirement (11.0 vs 15.0). Circle and Sphere Pro's advantage is update cadence (monthly vs every 34 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Math Duel costs $1.99 and Circle and Sphere Pro $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Math Duel against 4.9 for Circle and Sphere Pro. Both are backed by a comparable volume of ratings — 6 and 7 respectively. Written reviews are what separate them: 100% of Math Duel's written reviews are positive against 67% of Circle and Sphere Pro's.

Math Duel ships an update every 34 months, Circle and Sphere Pro monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Math Duel | Circle and Sphere Pro |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/math-duel-money-practice-tool/id1318372105/reviews)** | [4.9 (7 ratings)](https://appshunter.io/ios/app/circle-and-sphere-pro/id1564077280/reviews) |
| Number of ratings | 6 | **7** |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 34 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 54 MB | 180 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ellie's Games, LLC](https://appshunter.io/developer/355986115) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### Math Duel

[App page](https://appshunter.io/ios/app/math-duel-money-practice-tool/id1318372105)

This educational game makes learning money management skills fun and engaging for students. Players practice counting coins, calculating dollars, and making change through customizable challenges. It's designed to boost confidence and mathematical prowess in a dynamic, interactive way.

**Highlights:** Counting coins and dollars, Making change calculations, Customizable gameplay settings, Skill level adaptation, Confidence building, Interactive learning

**Features:** macOS Compatibility

**In-app purchases:** none


### Circle and Sphere Pro

[App page](https://appshunter.io/ios/app/circle-and-sphere-pro/id1564077280)

This app calculates various geometric quantities for circles and spheres, including sectors and segments. It supports decimals and fractions, displays formulas and solutions step-by-step, and stores calculations in a history. Users can share their results.

**Highlights:** Calculates sphere and circle quantities, Supports sectors and segments, Shows formulas and step-by-step solutions, Handles decimals and fractions, Stores calculations in history, Allows sharing of results

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Math Duel free?

Math Duel costs $1.99, with no in-app purchases.

### Is Circle and Sphere Pro free?

Circle and Sphere Pro costs $2.99, with no in-app purchases.

### Which has better reviews, Math Duel or Circle and Sphere Pro?

Math Duel is rated higher. Math Duel averages 5.0 out of 5 from 6 ratings, while Circle and Sphere Pro averages 4.9 from 7 ratings.

### Do Math Duel or Circle and Sphere Pro have ads?

Neither Math Duel nor Circle and Sphere Pro shows ads.

### Which is updated more often, Math Duel or Circle and Sphere Pro?

Math Duel ships an update every 34 months, and Circle and Sphere Pro monthly. Most recently, Math Duel was updated on October 24, 2026 and Circle and Sphere Pro on October 25, 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.*