SmartGo One

SmartGo One

Learn, play & study Go game

2K ratings
168 reviews
Free
In-App Purchases

Details

Released
April 7, 2022
Updated
October 21, 2026

Features

SmartGo One screenshot #1 for iPhone
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SmartGo One screenshot #6 for iPhone
iphone
ipad
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About

Learn, play, and improve at the ancient game of Go. This app offers adjustable board sizes, a strong AI opponent, and tools to study professional games and solve Go problems. It's designed for players of all skill levels, from beginners to masters.

✓Adjustable board sizes (9x9 to 19x19)
✓Strong KataGo game engine
✓Study professional game records
✓Solve Go problems and tutorials
✓Pattern matching for move suggestions
✓Territory estimator
✓Game recording and annotation
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What users say about SmartGo One

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+1

What's New in SmartGo One

3.4

October 21, 2026

• Make it easy to play against AI from the current position: switch from Replay to Play AI, or tap the stone next to the player’s name. • Better layout for Annotate and Markup toolbars. • Improved sorting and searching in Games. • Handle links and Markdown in comments. • Enter personal notes (as comments) in OGS correspondence games (no chat yet). • Performance improvements.

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3

Subscriptions & In-App Purchases

Pro Games and Features

Game collection updates and advanced features

$29.991 Year
14 Days trial
How to cancel SmartGo One subscription ⁉️

User reviews

The Best

Simply the best Go app in existence. I’m not exaggerating.

Best in show

This app is the end-all for all things Go on iOS. Anders is a top notch dev making amazing experiences. Years ago I asked if it would support online play and at the time it wasn’t planned. Well, here it is! OGS baked in! As soon as notifications are part of the deal I’ll be ditching my other online play app. 🙌🏻
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Good

Good

Sehr engagierte App

Auch in der kostenlosen Version sehr gut nutzbar. Danke an die Entwickler!

Play AI Bug

There seems to be a bug when selecting to Play AI. Sometimes it works, but more than half of the time, I end up a game where I’m playing both the black and white pieces. I end up having to delete the game and start a new one over and over until the AI finally kicks in. It’s a nice app when it works, but it doesn’t always work as expected.
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Developer apps

User experience

🐞

Reported Bugs

3 issues

Illegal move detection issues on certain board positions

Bug

Problems with missing variations or incorrect answers

Bug

Inconsistent behavior when passing moves

Bug
✨

Requested Features

5 requests

Add read-only mode

Feature

Improve move suggestion explanations

Feature

Introduce difficulty settings for AI

Feature

Integrate online play functionality

Feature

Provide more randomness in AI moves

Feature

FAQ

What is SmartGo One?

SmartGo One is a comprehensive application for the ancient board game of Go, also known as igo, weiqi, or baduk. It allows users to learn the game, play against a strong AI, and study professional games to improve their skills.

What are the key features of SmartGo One?

Key features include adjustable board sizes from 9x9 to 19x19, a powerful game engine based on KataGo, a vast database of professional game records for study, a library of Go problems for practice, and pattern matching technology to suggest moves.

How much does SmartGo One cost?

The app is free to download and offers in-app purchases. This model allows users to try out the basic functionality before committing to further features or content.

What devices is SmartGo One compatible with?

SmartGo One is available for iPhone, iPad, and Mac devices, allowing players to enjoy the game across their Apple ecosystem.

How can SmartGo One help me improve at Go?

The app provides multiple avenues for improvement. You can play against an adaptive AI, study over 125,000 professional game records, solve over 100 Go problems in the tutorial, and use pattern matching to see how masters would play specific board positions.