# Crazy Hard Fast Math Reaction vs Infinity

The clearest difference is ads: Infinity at none against Crazy Hard Fast Math Reaction's shown. Infinity also leads on update cadence (fortnightly vs every 11 months). Crazy Hard Fast Math Reaction's advantage is iOS requirement (12.4 vs 17.0). On price, in-app purchases 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 and Infinity sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Crazy Hard Fast Math Reaction ships an update every 11 months, Infinity fortnightly. The most recent releases landed on September 4, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | Crazy Hard Fast Math Reaction | Infinity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (29 ratings)](https://appshunter.io/ios/app/crazy-hard-fast-math-reaction/id877393958/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 27.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 8 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fragranze Games Ltd](https://appshunter.io/developer/640751335) | [Anand Raj R](https://appshunter.io/developer/514675684) |

## 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 |


### Infinity

[App page](https://appshunter.io/ios/app/infinity-basic-math-questions/id6748877343)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Host a Party (Lifetime) | $1.99 | one-time |


## 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 Infinity free?

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

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

Crazy Hard Fast Math Reaction shows ads; Infinity does not.

### Which is updated more often, Crazy Hard Fast Math Reaction or Infinity?

Crazy Hard Fast Math Reaction ships an update every 11 months, and Infinity fortnightly. Most recently, Crazy Hard Fast Math Reaction was updated on September 4, 2026 and Infinity on August 27, 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.*