---
title: "A Master of Go - Bewertungen, Einnahmen und Downloads in Vereinigte Staaten | Apple App Store"
description: "It is a Go AI featuring a neural network of that strong, open source AI. Leela Zero, ELF OpenGo, PhoenixGo, Minigo, SAI, and optionally KataGo!  You can use it as a strong opponent, and as a good teac"
---

# A Master of Go — Vereinigte Staaten
> powered by that neural network

![A Master of Go App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/04/c1/10/04c11052-1082-5ea3-04b6-906fd1bd929f/AppIcon-1x_U007emarketing-0-8-0-0-85-220-0.png/434x0w.png)

**Developer:** [Yuji Ichikawa](https://apptail.io/de/developer/yuji-ichikawa-Qlx)
**Category:** Games
**Rating:** 4.6/5 (78 ratings)
**Price:** Free
**Bundle ID:** com.blogspot.new-3rs.ChildOfZero
**Store:** Apple App Store
**Country:** Vereinigte Staaten
**Version:** 7.5.1 (released 2026-01-18)
**Original Release:** 2018-11-16
**Languages:** Japanese, Chinese, English, Korean

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1442035374)
**AppTail Page:** [https://apptail.io/de/app/app-cxcc/united-states](https://apptail.io/de/app/app-cxcc/united-states)

## A Master of Go Description
It is a Go AI featuring a neural network of that strong, open source AI. Leela Zero, ELF OpenGo, PhoenixGo, Minigo, SAI, and optionally KataGo!

You can use it as a strong opponent, and as a good teacher at the time of study.

With M2 processor of iPad Pro, the playouts are performed over 650 times per second with ELF OpenGo weight v1, and with A15 Bionic processor of iPad mini, over 200 times per second! Both exceed notebook computers and is comparable to desktop computers. With M2 processor of iPad Pro,  the playouts are performed over 250 times per second with KataGo b18c384nbt!
Other famous weights are also included.

For your information, the playout speed on the iPad Pro 9.7 inch model(A9X processor) will be about 10 times per second, and the one on the iPhone 6(A8 processor) will be about 1 time per second. I think that even so it is stronger than most amateurs, but I am sorry that patterns of misreading ladders will increase.
Please be careful when considering purchasing.

Enjoy it!

## A Master of Go Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/5a/30/67/5a306792-1eed-01df-f5f4-b47d3bbb603d/main_menu.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/f6/64/e2/f664e29b-c9a4-13b2-8270-24967e67d11b/in-app_store.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/83/53/81/8353810f-b46e-fcfe-0256-34635b588cd9/pr_source.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/c1/06/93/c10693a6-34ed-f851-52c6-ffc4cfbd3f93/pr_source.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/cc/66/eb/cc66ebb4-f719-113e-300f-3fbe22bbb2f8/pr_source.png/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/13/54/63/1354639f-5ec7-e67f-e079-5366d722599c/pr_source.png/1242x2688.png)

## A Master of Go Rating Breakdown in Vereinigte Staaten
- 5 stars: 61 (78%)
- 4 stars: 12 (15%)
- 3 stars: 2 (3%)
- 2 stars: 0 (0%)
- 1 stars: 3 (4%)

## A Master of Go Reviews in Vereinigte Staaten

### ***** "支持纯黑白的棋谱界面风格，可以设置显示的选点数量"
谢谢作者。请支持纯黑白的棋谱界面风格，并且可以设置显示的选点数量，比如显示1个分析选点
-- zliu1022, 2024-05-10

### *---- "Another buggy update"
This app is generally great but the developer’s personality is problematic and makes endless stupid bugs in updates inevitable: if you report a bug, he’s going to email you “your personality is not comfortable for me”. Isn’t that creepy?This time it becomes not possible to eliminate a move by clicking it.
-- Automorphy, 2022-08-21

### ****- "Needs to get better"
This app is good if you are going to play against AI or start a study game from scratch. You cannot set up a position. When you import a game it always starts with the wrong player and doesn’t have an option to change player’s turn. These features need to be installed soon because they are very fundamental. Image recognition is also a nice-to-have feature. Now I use another app to capture a board image, then I export the sgf to another app to set the correct player’s turn and only after then I can start to study with this app.
-- sinantos2, 2022-07-23

### ***** "Finally a powerful go AI in your pocket."
I love it. You can load a SGF from anywhere and review your game without needed a powerful computer.
-- Romain Guimard, 2021-06-22

### ***** "bug"
It's also Bai Xian under the rules of ancient China
-- xgjjd, 2021-04-30

### ****- "A good start"
I’ve been waiting for this since the Leela zero project emerged (still waiting for the chess version, but that’s ok). Some improvements could be used: 1. The user interface in general can be improved. Take a hint from some of the other popular go apps. 2. If you leave the app (not necessarily closing it even) the game wipes and for some reason is copied to your clipboard so you can paste it back and resume... clearly users shouldn’t have to do that. 3. It’s up to the user to load non-default network weights. It’d be nice to have those already loaded. You could make it such that there’s every difficulty level from random to pro by loading specific weights. Could track users progress as well, as is done in crazy stone app. 4. There’s a dynamic Komi branch of Leela zero. Could be used for maintaining the AI’s strength and still allowing high handicap games. That is all. Thank you.
-- Bobbybob32134282, 2020-04-14

### ***** "Great AI engine, but disappointed that it still cannot handle simple ladders"
As indicated in the title/subject line
-- wayne.go.8818, 2019-10-23

### ****- "The one and only AI worth studying on iOS"
A simple app that opens SGF files from many Go apps. Fascinating and the only way iOS currently supports alpha go or ELF study.

iOS 13 has made importing a problem. I’m sure a fix is coming! I hope so! 

My favorite study app.
-- rumpole55, 2019-10-18

### *---- "AI fills in its own territory."
I passed over 30 times while the default AI filed in its own territory.  This was territory that already had about six single space eyes and not enough space to create a living group. 

It also tried to play inside my living territory over and over again until there was literally no legal plays inside my territory. 

There is no undo so get ready to waste an entire game if you happen to brush the screen at the wrong time. In fact the ONLY controls available during game play are pass and resign. You can’t even change settings during play. So you can’t turn sound or coordinates on or off while you are playing let alone score, analyze, or get hints. 

You can’t load a saved game for review, you have to find some way of copying an sgf to the clipboard. 

They want to charge you PER MOVE for some of the analysis features!!!!!!!!!!

For the price of this app, this is utterly ridiculous!
-- Myshkin55417, 2019-10-09

### ***** "Good"
Very strong
-- 公益广告皇后, 2019-01-07

[View all A Master of Go reviews and detailed analytics on AppTail](https://apptail.io/de/account/signup?utm_campaign=ai-crawl&utm_content=reviews)

## A Master of Go In-App Purchases
| Item | Price |
|------|-------|
| 200 coins | $0.99 |
| KataGo Engine | $11.99 |

## A Master of Go Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Bezahlt | Taiwan | Games | #191 |
| Top Bezahlt | Japan | Games | #455 |

## A Master of Go Discovered Keywords
- go master
- a master of go

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## A Master of Go Available In
- [Japan](https://apptail.io/de/app/app-cxcc/japan)
- [Südkorea](https://apptail.io/de/app/app-cxcc/south-korea)
- [Taiwan](https://apptail.io/de/app/app-cxcc/taiwan)
- [Thailand](https://apptail.io/de/app/app-cxcc/thailand)
- [Vereinigte Staaten](https://apptail.io/de/app/app-cxcc/united-states)
- [Sonderverwaltungsregion Hongkong](https://apptail.io/de/app/app-cxcc/hong-kong)
- [Frankreich](https://apptail.io/de/app/app-cxcc/france)
- [Singapur](https://apptail.io/de/app/app-cxcc/singapore)
- [Deutschland](https://apptail.io/de/app/app-cxcc/germany)
- [Russland](https://apptail.io/de/app/app-cxcc/russia)
- [Kanada](https://apptail.io/de/app/app-cxcc/canada)
- [Vereinigtes Königreich](https://apptail.io/de/app/app-cxcc/united-kingdom)
- [Schweiz](https://apptail.io/de/app/app-cxcc/switzerland)
- [Australien](https://apptail.io/de/app/app-cxcc/australia)
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---

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