# Mathstep vs Yikou

The clearest difference is ads: Yikou at none against Mathstep's shown. Mathstep's advantage is update cadence (every 3 days vs every 3 months) and iOS requirement (12.0 vs 17.0). On price, 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.

Mathstep ships an update every 3 days, Yikou every 3 months. The most recent releases landed on September 19, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Mathstep | Yikou |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 3 months |
| Size | 32 MB | 0 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Takao Ambe](https://appshunter.io/developer/1819409213) | [Yeonni Lee](https://appshunter.io/developer/1710530643) |

## What reviewers say

### Mathstep

[App page](https://appshunter.io/ios/app/mathstep/id6753911229)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Mathstep free?

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

### Is Yikou free?

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

### Do Mathstep or Yikou have ads?

Mathstep shows ads; Yikou does not.

### Which is updated more often, Mathstep or Yikou?

Mathstep ships an update every 3 days, and Yikou every 3 months. Most recently, Mathstep was updated on September 19, 2026 and Yikou on September 10, 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.*