# CROUPIX vs Fast Math

The clearest difference is update cadence: Fast Math at every 9 days against CROUPIX's every 3 weeks. CROUPIX's advantage is iOS requirement (14.0.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CROUPIX sells 1 in-app purchase, starting at $1.99 per month and Fast Math sells 11 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

CROUPIX ships an update every 3 weeks, Fast Math every 9 days. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | CROUPIX | Fast Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fast-math-mental-math-games/id6758257973/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 119 MB | 9 MB |
| Requires iOS | **14.0.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 17+ | +4 |
| Developer | [ian Jouglain](https://appshunter.io/developer/1817239434) | [Youssef Ziat](https://appshunter.io/developer/1871790298) |

## What reviewers say

### CROUPIX

[App page](https://appshunter.io/ios/app/croupix/id6748760613)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $1.99 | per month |


### Fast Math

[App page](https://appshunter.io/ios/app/fast-math-mental-math-games/id6758257973)

Sharpen your mental math skills with quick, timed challenges. Improve focus and accuracy through arithmetic, number sequences, and IQ-style scoring. Sessions are short, fitting easily into any break, and the app works entirely offline.

**Highlights:** Short, timed math sessions (1-5 min), Arithmetic and number sequence challenges, IQ-style scoring (accuracy + speed), Offline functionality, Progress tracking, Distraction-free design

**Features:** Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fast Math Weekly | $1.99 | per 7 days |
| Fast Math Pro Monthly | $3.99 | per month |
| Fast Math Pro Weekly | $4.99 | per 7 days |
| Fast Math Monthly | $4.99 | per month |
| Fast Math Pro Yearly | $14.99 | per year |
| Fast Math Yearly | $19.99 | per year |
| 500 Coins | $2.99 | one-time |
| 1500 Coins | $6.99 | one-time |
| 4000 Coins | $14.99 | one-time |
| Fast Math Pro Lifetime | $29.99 | one-time |
| Lifetime Access | $29.99 | one-time |


## Frequently asked questions

### Is CROUPIX free?

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

### Is Fast Math free?

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

### Do CROUPIX or Fast Math have ads?

Neither CROUPIX nor Fast Math shows ads.

### Which is updated more often, CROUPIX or Fast Math?

CROUPIX ships an update every 3 weeks, and Fast Math every 9 days. Most recently, CROUPIX was updated on October 28, 2026 and Fast Math on October 30, 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.*