CrazyStone DeepLearning 4+

Enjoy Online and Offline Go

UNBALANCE Corporation

    • 4.7 • 935 Ratings
    • Free
    • Offers In-App Purchases




The strongest, the best Go app in the world based on Crazy Stone employing Deep Learning technology !

*New Features*
-We have introduced an online game feature. Enjoy online games against players all over the world !
-IAGA Rating Certification Tests
Challenge the Dan/Kyu tests provided by the International AI Go Association.
-Premium Membership
Completely ad free, higher levels and additional features for Premium Members.

Crazy Stone has made a huge step forward by combining Deep Neural Networks with Monte Carlo Tree Search. The highest level of Crazy Stone Deep Learning has achieved 5d in kgs rating and in this lite version, we have provided you the highest level of 2d for FREE!

* 17 levels of play from 15k to 2d
There are 17 levels of play (15k-2d) for all the board sizes.
Crazy Stone has improved not only in strength, but also in his style of play and the lower levels are perfect for players who want to learn the game of Go.
Now, the strongest level for Premium Members is 5d.

* IAGA Rating Certification Test
Challenge the Dan/Kyu tests provided by the International AI Go Association. You will be awarded certificate images if you pass the tests.
(You will need to register an AI Game Account to challenge the tests. Registration is free) 

* Export and import sgf game files
You will be able to import and export game records in sgf format from other apps. Also you can copy game record data to the clipboard.

* Rating Mode
Test your skills with serious games against the AI, keeps track of the results of your games and the history of your rating!
The Rating Mode will be partly unlocked if you reach 7k IAGA Rating. If you become a premium member, all of the Rating Mode features will be unlocked immediately.

* Other features
・Friendly 3 input methods
You can choose from 3 options of input methods (Zoom, Cursor & Touch).
・17 levels of play for each board size (9x9, 13x13, 19x19)
・Human vs Computer, Human vs Human (sharing a single device)
・Computer vs Computer Games
・Handicap games, variable options of Komi
・Hint (suggest)
・Instant Undo (available even when the computer is thinking)
・Automatic territory calculation
・Japanese/Chinese Rules
・Suspend/Re-start games
・Save/Load game record in sgf files
・Automatic and manual replay of a game record
・Highlight the last move
・COM resign feature
・Byoyomi games
(You will not be able to select computer level in timed games)
・Atari warning
・Highlight the last move
・Play speed can be adjusted

■ Subscription Details
The benefits of Premium Members are:
-Completely ad free
-Maximum AI playing strength will rise to 5dan
-Play Rating Mode for all 3 board sizes
-Challenge the IAGA Certification Tests higher than 7kyu

About the subscription
-Monthly Subscription for Premium Membership.
-Customers will be charged a monthly fee to their iTunes Account.
-The Subscription will be renewed automatically unless cancelled more than 24 hours before the end of it's current period.
-Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal.

How to cancel the subscription
-Form the app
Touch the Manage Subscription button and then touch Cancel Subscription.
-From your device
Move to Settings > iTunes Store and App Store > Apple ID > Subscription

-It is not possible to prorate usage fees, cancel or refund the subscription for the current period.
-After cancelling the subscription, you will be able to play Engine Server Games until the current subscription period expires.

Privacy Policy
Terms of Use

* This app is certified by International AI Go Association

What’s New

Version 3.1.5

Performance improvements

Ratings and Reviews

4.7 out of 5
935 Ratings

935 Ratings

Chad Monger ,

I decided to learn go last night

I tried about ten apps and settled on two. I read the rules. Really got no idea about strategy so i just played tsumego pro go problems for a day until i knew what not to do and then i set this on the lowest setting and started playing it. Im catching on a little. Even won a few. One of the main things i like are that the adds only popup between games and arent those video ads ya have to watch til the end. The other thing i like is this is the strongest computer player if i ever catch on. Overall this is the best thing ive found to kill time while waiting for an hour to play clash of clans for five minutes and Confucius said go is a worthwhile pastime

positionkiller ,

Great beginner app

First, I am sure that the AI here is unmatched but this app is also good for a beginner. Sure it doesn’t seem to have puzzles to play but the killer feature here for beginners is the hint mode. Some apps seem to lack this basic feature and some apps that have it will limit you to a certain number of hints per game! Additionally, this app will let you see your potential territory in mid game and not force you to wait until the end of the game to see. My only suggestion is let you see the territory mid-game without the need to press the territory button after every single time. Make it an option. Makes it easy for me as a complete newbie to see what territory I have conquered move by move.

Jill and Jack 3030 ,

So enjoyable! A great game 👍

The game of Go itself is awesome 😎; a great balance of logic and creativity that is additive instead of subtractive (like chess and checkers). Very mentally stimulating and fun. This program is a great one for “Go”! The visuals and sounds are professional, the AI is good (with many levels of difficulty), and being able to make computer opponents play each other is great!! Very recommended

App Privacy

The developer, UNBALANCE Corporation, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers
  • Usage Data
  • Other Data

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • Identifiers

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Purchases
  • Identifiers
  • Usage Data
  • Diagnostics
  • Other Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

More By This Developer

The Othello
The Spades
Shogi Lv.100 Entry Edition
The Backgammon
The Chess Lv.100
Crazy Bishop

You Might Also Like

Tsumego Pro (Go problems)
Little Go
SmartGo One
BadukPop Go
Go Game - 2 Players