# 围棋 碁 GO vs Read19

The clearest difference is update cadence: Read19 at every 2 days against 围棋 碁 GO's every 5 days. 围棋 碁 GO's advantage is iOS requirement (16.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 围棋 碁 GO sells 1 one-off in-app purchase and Read19 sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

围棋 碁 GO ships an update every 5 days, Read19 every 2 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 围棋 碁 GO | Read19 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/go/id6771855617/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 16 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hui Zhang](https://appshunter.io/developer/297387591) | [思程 陈](https://appshunter.io/developer/6786794222) |

## What reviewers say

### 围棋 碁 GO

[App page](https://appshunter.io/ios/app/go/id6771855617)

Explore the ancient game of Go with a top-tier AI. This professional-grade app offers AI analysis, a smooth playing experience, and diverse opening strategies. Enjoy personalized settings and offline privacy.

**Highlights:** KataGo AI engine integration, Professional game review and analysis, Diverse opening strategies, Customizable AI difficulty, Offline play and privacy, Minimalist UI design

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁难度级别 | $4.99 | one-time |


### Read19

[App page](https://appshunter.io/ios/app/read19/id6799068030)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KataGo Review Plus | $6.99 | per month |
| 300K Visits | $1.99 | one-time |
| 1M Visits | $3.99 | one-time |
| 3M Visits | $9.99 | one-time |


## Frequently asked questions

### Is 围棋 碁 GO free?

围棋 碁 GO is free to download, with in-app purchases available.

### Is Read19 free?

Read19 is free to download, with in-app purchases available.

### Do 围棋 碁 GO or Read19 have ads?

Neither 围棋 碁 GO nor Read19 shows ads.

### Which is updated more often, 围棋 碁 GO or Read19?

围棋 碁 GO ships an update every 5 days, and Read19 every 2 days. Most recently, 围棋 碁 GO was updated on October 31, 2026 and Read19 on October 29, 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.*