# KaiKou vs HSK Training

The clearest difference is in-app purchases: HSK Training at none against KaiKou's 6. HSK Training also leads on update cadence (every 9 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. KaiKou sells 6 in-app purchases, starting at $6.99 per month. HSK Training asks for nothing beyond the download.

KaiKou ships an update every 3 weeks, HSK Training every 9 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | KaiKou | HSK Training |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Size | 426 MB | 52 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Nhat Nguyen Ngoc](https://appshunter.io/developer/1825330876) | [joze kosmerl](https://appshunter.io/developer/6794506009) |

## What reviewers say

### KaiKou

[App page](https://appshunter.io/ios/app/kaikou/id6751576532)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KaiKou AI $6.99 Monthly | $6.99 | per month |
| KaiKou Pro Monthly $12.99 | $12.99 | per month |
| KaiKou AI $19.99 Yearly | $19.99 | per year |
| KaiKou Ultra Monthly | $24.99 | per month |
| KaiKou Pro Annual | $89.99 | per year |
| KaiKou Ultra Annual | $179.99 | per year |


### HSK Training

[App page](https://appshunter.io/ios/app/hsk-training/id6794506007)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KaiKou free?

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

### Is HSK Training free?

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

### Do KaiKou or HSK Training have ads?

Neither KaiKou nor HSK Training shows ads.

### Which is updated more often, KaiKou or HSK Training?

KaiKou ships an update every 3 weeks, and HSK Training every 9 days. Most recently, KaiKou was updated on October 25, 2026 and HSK Training on October 31, 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.*