# Math Juice vs Calcul Mental in Space

The clearest difference is in-app purchases: Math Juice at none against Calcul Mental in Space's 1. Math Juice also leads on ads (none vs shown) and rating (4.7 vs 4.4). Calcul Mental in Space's advantage is update cadence (every 6 days vs every 2 months) and ratings volume (576 vs 18). On price and device support there is nothing between them.

Both are free to download. Calcul Mental in Space sells 1 one-off in-app purchase. Math Juice asks for nothing beyond the download.

Math Juice holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Calcul Mental in Space has 576 ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 92% of Math Juice's written reviews are positive against 71% of Calcul Mental in Space's.

Math Juice ships an update every 2 months, Calcul Mental in Space every 6 days. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Math Juice | Calcul Mental in Space |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (18 ratings)](https://appshunter.io/ios/app/math-juice/id1268885355/reviews)** | [4.4 (576 ratings)](https://appshunter.io/ios/app/calcul-mental-in-space/id1510484802/reviews) |
| Number of ratings | 18 | **576** |
| Positive reviews | **92.3% of reviews** | 71.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 134 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Bryan Bazilauskas](https://appshunter.io/developer/1108193759) | [Huy Le](https://appshunter.io/developer/1279607371) |

## What reviewers say

### Math Juice

[App page](https://appshunter.io/ios/app/math-juice/id1268885355)

Practice math facts with engaging games designed by teachers. Features timed challenges and a coin-earning mode to make learning enjoyable for students, parents, and educators.

**Highlights:** Speed Run mode for timed practice, Grind Mode with coin rewards, Multiplication, division, addition, subtraction practice, Perfect squares and combined operations, Progress tracking for parents and teachers, Reward structure for motivation

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Math Juice free?

Math Juice is free to download, with no in-app purchases.

### Is Calcul Mental in Space free?

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

### Which has better reviews, Math Juice or Calcul Mental in Space?

Math Juice is rated higher. Math Juice averages 4.7 out of 5 from 18 ratings, while Calcul Mental in Space averages 4.4 from 576 ratings.

### Do Math Juice or Calcul Mental in Space have ads?

Calcul Mental in Space shows ads; Math Juice does not.

### Which is updated more often, Math Juice or Calcul Mental in Space?

Math Juice ships an update every 2 months, and Calcul Mental in Space every 6 days. Most recently, Math Juice was updated on November 3, 2026 and Calcul Mental in Space on November 9, 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.*