# Less Math 算數 (校園版) vs 數之寶島

The clearest difference is update cadence: Less Math 算數 (校園版) at every 5 days against 數之寶島's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Less Math 算數 (校園版) ships an update every 5 days, 數之寶島 every 6 months. The most recent releases landed on September 14, 2026 and July 28, 2026 respectively.

## The numbers

| Metric | Less Math 算數 (校園版) | 數之寶島 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 6 months |
| Size | 69 MB | 175 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RiteX Ai Technologies Limited](https://appshunter.io/developer/1558355552) | [The University of Hong Kong](https://appshunter.io/developer/451384643) |

## What reviewers say

### Less Math 算數 (校園版)

[App page](https://appshunter.io/ios/app/less-math/id6496284077)

**Features:** macOS Compatibility

**In-app purchases:** none


### 數之寶島

[App page](https://appshunter.io/ios/app/id6744041597)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Less Math 算數 (校園版) free?

Less Math 算數 (校園版) is free to download, with no in-app purchases.

### Is 數之寶島 free?

數之寶島 is free to download, with no in-app purchases.

### Do Less Math 算數 (校園版) or 數之寶島 have ads?

Neither Less Math 算數 (校園版) nor 數之寶島 shows ads.

### Which is updated more often, Less Math 算數 (校園版) or 數之寶島?

Less Math 算數 (校園版) ships an update every 5 days, and 數之寶島 every 6 months. Most recently, Less Math 算數 (校園版) was updated on September 14, 2026 and 數之寶島 on July 28, 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.*