# 牛牛星球 vs OKmath英语

The clearest difference is update cadence: 牛牛星球 at every 6 days against OKmath英语's every 2 weeks. OKmath英语's advantage is iOS requirement (13.0 vs 15.0). 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.

牛牛星球 ships an update every 6 days, OKmath英语 every 2 weeks. The most recent releases landed on September 8, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 牛牛星球 | OKmath英语 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (17 ratings)](https://appshunter.io/ios/app/okmath/id6757459128/reviews)** |
| Number of ratings | — | **17** |
| Positive reviews | — | 86.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | — | Free |
| Size | 52 MB | 95 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [南宁未知教育科技有限公司](https://appshunter.io/developer/1841326967) | [北京橙旭园网络技术有限公司](https://appshunter.io/developer/1420996184) |

## What reviewers say

### 牛牛星球

[App page](https://appshunter.io/ios/app/id6752850121)

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

**In-app purchases:** none


### OKmath英语

[App page](https://appshunter.io/ios/app/okmath/id6757459128)

This app offers free English learning for young Chinese children. It focuses on early English education through engaging content and activities designed for a child's development.

**Highlights:** Free English启蒙 (early education), Designed for Chinese children, Engaging content, Focus on early development

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

**In-app purchases:** none


## Frequently asked questions

### Is 牛牛星球 free?

牛牛星球 is free to download, with no in-app purchases.

### Is OKmath英语 free?

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

### Do 牛牛星球 or OKmath英语 have ads?

Neither 牛牛星球 nor OKmath英语 shows ads.

### Which is updated more often, 牛牛星球 or OKmath英语?

牛牛星球 ships an update every 6 days, and OKmath英语 every 2 weeks. Most recently, 牛牛星球 was updated on September 8, 2026 and OKmath英语 on September 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*