# 六六牛APP vs Caigentan

The clearest difference is in-app purchases: 六六牛APP at none against Caigentan's 1. Caigentan's advantage is update cadence (every 3 days vs every 21 months) and device support. On price and iOS requirement there is nothing between them.

Both are free to download. Caigentan sells 1 one-off in-app purchase. 六六牛APP asks for nothing beyond the download.

六六牛APP ships an update every 21 months, Caigentan every 3 days. The most recent releases landed on September 9, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | 六六牛APP | Caigentan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | Every 21 months | **Every 3 days** |
| Size | 29 MB | 295 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Jiujiang Smooth Education Software Co., LTD](https://appshunter.io/developer/1693031271) | [zhenyu song](https://appshunter.io/developer/1721282851) |

## What reviewers say

### 六六牛APP

[App page](https://appshunter.io/ios/app/app/id6473402856)

**In-app purchases:** none


### Caigentan

[App page](https://appshunter.io/ios/app/caigentan-chinese-wisdom/id6760556805)

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is 六六牛APP free?

六六牛APP is free to download, with no in-app purchases.

### Is Caigentan free?

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

### Which is updated more often, 六六牛APP or Caigentan?

六六牛APP ships an update every 21 months, and Caigentan every 3 days. Most recently, 六六牛APP was updated on September 9, 2026 and Caigentan on September 11, 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.*