# Math 24 vs I

The clearest difference is update cadence: I at every 10 days against Math 24's every 4 months. Math 24's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Math 24 sells 5 one-off in-app purchases and I sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Math 24 ships an update every 4 months, I every 10 days. The most recent releases landed on October 12, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Math 24 | I |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (525 ratings)](https://appshunter.io/ios/app/math-24-mental-math/id1481802769/reviews)** | — |
| Number of ratings | **525** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 24 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CHENGDU MIAOZHI TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1465440799) | [Kin Tong Lee](https://appshunter.io/developer/1833051031) |

## What reviewers say

### Math 24

[App page](https://appshunter.io/ios/app/math-24-mental-math/id1481802769)

This app challenges users to reach the number 24 using basic arithmetic operations. It offers various practice modes, timed challenges, and a problem generator for educators. Users can track their progress on leaderboards and utilize hints for assistance.

**Highlights:** Daily practice with difficulty levels, Create custom test papers, Timed race challenges, Global leaderboards, Adjustable difficulty and titles, Hints and solutions provided, Gesture-based puzzle solving

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy 10 hints | $0.99 | one-time |
| Buy 10 skips | $0.99 | one-time |
| Buy 50 generate questions | $3.99 | one-time |
| Remove Ads | $4.99 | one-time |
| Lifetime Premium | $5.99 | one-time |


### I

[App page](https://appshunter.io/ios/app/i-talk-u/id6785140219)

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is Math 24 free?

Math 24 is free to download, with in-app purchases available.

### Is I free?

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

### Do Math 24 or I have ads?

Both Math 24 and I show ads.

### Which is updated more often, Math 24 or I?

Math 24 ships an update every 4 months, and I every 10 days. Most recently, Math 24 was updated on October 12, 2026 and I on September 18, 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.*