# Calcul Mental in Space vs Quadrant

The clearest difference is in-app purchases: Quadrant at none against Calcul Mental in Space's 1. Quadrant also leads on ads (none vs shown). Calcul Mental in Space's advantage is iOS requirement (15.0 vs 26.4). 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. Quadrant asks for nothing beyond the download.

## The numbers

| Metric | Calcul Mental in Space | Quadrant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (575 ratings)](https://appshunter.io/ios/app/calcul-mental-in-space/id1510484802/reviews)** | — |
| Number of ratings | **575** | — |
| Positive reviews | 78.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 134 MB | 191 MB |
| Requires iOS | **15.0** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Huy Le](https://appshunter.io/developer/1279607371) | [lipdila's coding](https://appshunter.io/developer/501197529) |

## What reviewers say

### 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 |


### Quadrant

[App page](https://appshunter.io/ios/app/quadrant/id6788873870)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calcul Mental in Space free?

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

### Is Quadrant free?

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

### Do Calcul Mental in Space or Quadrant have ads?

Calcul Mental in Space shows ads; Quadrant does not.

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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.*