# Large Math Drill vs Yikou

The clearest difference is in-app purchases: Yikou at none against Large Math Drill's 1. Yikou also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Large Math Drill sells 1 one-off in-app purchase. Yikou asks for nothing beyond the download.

## The numbers

| Metric | Large Math Drill | Yikou |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | — | Fortnightly |
| Size | 18 MB | 0 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yuto Inagaki](https://appshunter.io/developer/1733484400) | [Yeonni Lee](https://appshunter.io/developer/1710530643) |

## What reviewers say

### Large Math Drill

[App page](https://appshunter.io/ios/app/large-math-drill-mental-math/id6748839939)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム会員 | $2.99 | one-time |


### Yikou

[App page](https://appshunter.io/ios/app/yikou-learn-chinese/id6777601862)

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

**In-app purchases:** none


## Frequently asked questions

### Is Large Math Drill free?

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

### Is Yikou free?

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

### Do Large Math Drill or Yikou have ads?

Large Math Drill shows ads; Yikou does not.

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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.*