# Crazy Hard Fast Math Reaction vs DEAM

The clearest difference is review sentiment: DEAM at 100% against Crazy Hard Fast Math Reaction's 27%. DEAM also leads on in-app purchases (none vs 1) and ads (none vs shown). Crazy Hard Fast Math Reaction's advantage is device support (3 vs 1) and iOS requirement (12.4 vs 16.0). On price there is nothing between them.

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

Crazy Hard Fast Math Reaction ships an update every 11 months, DEAM daily. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Crazy Hard Fast Math Reaction | DEAM |
| --- | --- | --- |
| 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 | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 48 MB | 3 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fragranze Games Ltd](https://appshunter.io/developer/640751335) | [HVALABS, LLC](https://appshunter.io/developer/1875666107) |

## 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 |


### DEAM

[App page](https://appshunter.io/ios/app/deam-math-puzzle/id6736866683)

This logic game challenges players to reach a target number using six given numbers and basic arithmetic operations. It's designed to improve mental calculation and problem-solving skills for all ages.

**Highlights:** Reach target number with 6 numbers, Use +, -, x, ÷ operations, Improve mental calculation, Creative problem-solving, Thousands of puzzles, Addictive gameplay

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

**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 DEAM free?

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

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

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

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

Crazy Hard Fast Math Reaction ships an update every 11 months, and DEAM daily. Most recently, Crazy Hard Fast Math Reaction was updated on November 1, 2026 and DEAM on November 4, 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.*