# Fraction Challenge vs Calcul Mental in Space

The clearest difference is ads: Fraction Challenge at none against Calcul Mental in Space's shown. Fraction Challenge also leads on iOS requirement (13.0 vs 15.0). Calcul Mental in Space's advantage is update cadence (every 6 days vs every 2 months) and review sentiment (79% vs 70%). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Fraction Challenge sells 1 one-off in-app purchase and Calcul Mental in Space sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for Fraction Challenge against 4.4 for Calcul Mental in Space. Both are backed by a comparable volume of ratings — 1.5K and 576 respectively. Written reviews are what separate them: 70% of Fraction Challenge's written reviews are positive against 79% of Calcul Mental in Space's.

Fraction Challenge ships an update every 2 months, Calcul Mental in Space every 6 days. Both last shipped on November 7, 2026.

## The numbers

| Metric | Fraction Challenge | Calcul Mental in Space |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.5K ratings)](https://appshunter.io/ios/app/fraction-challenge/id1499338364/reviews)** | [4.4 (576 ratings)](https://appshunter.io/ios/app/calcul-mental-in-space/id1510484802/reviews) |
| Number of ratings | **1.5K** | 576 |
| Positive reviews | 70.1% of reviews | **78.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 89 MB | 134 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Didactoons Games SL](https://appshunter.io/developer/1457185685) | [Huy Le](https://appshunter.io/developer/1279607371) |

## What reviewers say

### Fraction Challenge

[App page](https://appshunter.io/ios/app/fraction-challenge/id1499338364)

Engage in fun math games designed to teach and reinforce fraction operations. Practice addition, subtraction, multiplication, and division of fractions through interactive challenges. Compete with friends in multiplayer mode to boost mental calculation skills.

**Highlights:** Fraction representation, Addition and subtraction of fractions, Equivalent fractions, Fraction reduction, Multiplication and division of fractions, Multiplayer mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get the Full version | $1.99 | one-time |

**What reviewers like**

- 👍 Helps with learning fractions
- 🚀 Fun and engaging game
- 💡 Good for practicing and preparing for tests
- 👍 Competitive and challenging

**What reviewers complain about**

- 🐛 App crashes or doesn't open
- 🕰️ Timer is too fast
- 💰 Not free to play

**Reported bugs**

- App crashes on launch
- Login issues

**Requested features**

- Option to remove timer or increase time
- More game modes (e.g., divided fractions, add/subtract fractions, multiply)
- No battery required to play


### Calcul Mental in Space

[App page](https://appshunter.io/ios/app/calcul-mental-in-space/id1510484802)

Practice mental math with a fun, space-themed game. Improve your calculation speed, reflexes, and math skills through engaging challenges. Master addition, subtraction, multiplication, and division with increasing difficulty levels.

**Highlights:** Mental math practice, Speed and reflex training, Addition, subtraction, multiplication, division, Times and division tables review, Progressive difficulty levels, Achievement encouragement

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Premium | $2.99 | one-time |


## Frequently asked questions

### Is Fraction Challenge free?

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

### Is Calcul Mental in Space free?

Calcul Mental in Space is free to download, with in-app purchases available.

### Which has better reviews, Fraction Challenge or Calcul Mental in Space?

Fraction Challenge is rated higher. Fraction Challenge averages 4.5 out of 5 from 1.5K ratings, while Calcul Mental in Space averages 4.4 from 576 ratings.

### Do Fraction Challenge or Calcul Mental in Space have ads?

Calcul Mental in Space shows ads; Fraction Challenge does not.

### Which is updated more often, Fraction Challenge or Calcul Mental in Space?

Fraction Challenge ships an update every 2 months, and Calcul Mental in Space every 6 days. Most recently, Fraction Challenge was updated on November 7, 2026 and Calcul Mental in Space on November 7, 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.*