# Crazy Hard Fast Math Reaction vs Parallel Math

The clearest difference is review sentiment: Parallel Math at 100% against Crazy Hard Fast Math Reaction's 27%. Parallel Math also leads on rating (4.0 vs 1.7) and in-app purchases (none vs 1). Crazy Hard Fast Math Reaction's advantage is ratings volume (29 vs 4). On price and device support there is nothing between them.

Both are free to download. Crazy Hard Fast Math Reaction sells 1 one-off in-app purchase. Parallel Math asks for nothing beyond the download.

Parallel Math holds the better App Store score, 4.0 against 1.7. That said, the two scores are not equally well evidenced: Crazy Hard Fast Math Reaction has 29 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 27% of Crazy Hard Fast Math Reaction's written reviews are positive against 100% of Parallel Math's.

## The numbers

| Metric | Crazy Hard Fast Math Reaction | Parallel Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.7 (29 ratings)](https://appshunter.io/ios/app/crazy-hard-fast-math-reaction/id877393958/reviews) | **[4.0 (4 ratings)](https://appshunter.io/ios/app/parallel-math/id892379653/reviews)** |
| Number of ratings | **29** | 4 |
| Positive reviews | 27.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 48 MB | 11 MB |
| Requires iOS | 12.4 | **5.1.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fragranze Games Ltd](https://appshunter.io/developer/640751335) | [Shane Clifford](https://appshunter.io/developer/850287078) |

## What reviewers say

### Crazy Hard Fast Math Reaction

[App page](https://appshunter.io/ios/app/crazy-hard-fast-math-reaction/id877393958)

Test your math skills with an infinite number of calculations. Choose your difficulty and race against the clock to achieve a high score. Compete with friends on multiple leaderboards to prove your math prowess.

**Highlights:** Infinite math calculations, Two-button right/wrong input, Timed challenges, Difficulty options (easy, normal, hard), Multiple leaderboards, Multiplayer competition

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Parallel Math

[App page](https://appshunter.io/ios/app/parallel-math/id892379653)

Test your brain's multitasking abilities by solving two math problems simultaneously. It's easy to learn but challenging to master, offering a fun way to exercise your cognitive skills.

**Highlights:** Solve two math problems at once, Easy to play, Hard to master, Cognitive skill exercise, Fun gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Crazy Hard Fast Math Reaction free?

Crazy Hard Fast Math Reaction is free to download, with in-app purchases available.

### Is Parallel Math free?

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

### Which has better reviews, Crazy Hard Fast Math Reaction or Parallel Math?

Parallel Math is rated higher. Crazy Hard Fast Math Reaction averages 1.7 out of 5 from 29 ratings, while Parallel Math averages 4.0 from 4 ratings.

### Do Crazy Hard Fast Math Reaction or Parallel Math have ads?

Crazy Hard Fast Math Reaction shows ads; Parallel Math 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.*