# CrazyStone DeepLearning Pro — Strongest Go App

> Deep learning powered Go application with analysis and rating modes. (iPhone/iPad app by UNBALANCE Corporation.)

- Source: https://appshunter.io/ios/app/crazystone-deeplearning-pro/id1160054151 (this page in markdown: same URL + `.md`)
- Developer: [UNBALANCE Corporation](https://appshunter.io/developer/358617691)
- Category: Games, Board, Strategy
- Price: $16.99
- Rating: 4.30/5 from 23 App Store ratings · 28 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 51 MB
- Languages: American English
- Released: 2016-10-08
- Data updated: 2026-09-15
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/crazystone-deeplearning-pro/id1160054151/reviews.md

## What is CrazyStone DeepLearning Pro?

The strongest, the best Go app in the world based on Crazy Stone employing Deep Learning technology ! 
-------------------------------------------------------------------------------------------------
 
Crazy Stone has made a huge step forward by combining Deep Neural Networks with Monte Carlo Tree Search. 
The highest level of CrazyStone DeepLearning has achieved 5d in kgs rating ! 

We have provided an Analysis mode to review your games, and Rating mode to confirm your 
progress. In CrazyStone DeepLearning, there are all the features you need to enjoy and improve 
your game of Go !


* 20 levels of play from 15k to 5d
There are 20 levels of play (15k-5d) 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 average players.
 


* Analysis Mode 
You can analyze your current game and also game records saved in sgf files.
Use the analysis mode to review games and help improve your strength.  
Move list, Histogram, Record analysis, Situation graph can be confirmed 
with the analysis by Crazy Stone.


* Rating Mode
We have provided a Rating Mode. 
You can confirm the results of games played and the history of your rating.


* Export and import sgf game files
You will be able to import and load game records in sgf format.
Please use CrazyStone DeepLearning to review and analyze Go games.
If you save games in DL format, the results of the record analysis will also be saved in the file. 


* Other features

・Friendly 3 input methods
You can choose from 3 options of input methods (Zoom, Cursor & Touch).

・20 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

・Landscape mode

## Key features

- Deep learning AI for Go
- 20 levels of play (15k to 5d)
- Game analysis mode
- Rating mode to track progress
- SGF file import/export
- Multiple input methods
- Human vs. Computer & Human vs. Human modes

## Recent user reviews (10 of 28)

All indexed reviews: https://appshunter.io/ios/app/crazystone-deeplearning-pro/id1160054151/reviews.md

### 3/5 — So and so

*2026-07-10*

Could really do with an update. Analysing a game takes more than 10 steps - and going back to game mode another five. And that is just one example. Playing itself works rather well.

### 5/5 — So far so good

*2024-06-27, version 1.1.4*

Fast and strong go app. But it cost 20 bucks

### 5/5 — Nach vielen Jahren immer noch mein Lieblings-Go

*2023-07-07*

Ja, inzwischen gibt es andere Apps, die viel stärker spielen. Es gibt auch Apps, deren Analysefunktion durchdachter ist. Was CrazyStone Go auszeichnet, ist der geniale Rating-Mode, der mir abhängig von meiner Spielstärke viele ähnlich starke Gegner gibt (etwa +-2 Kyu zu meinem geschätzten Rating mit entsprechend Vorgabevariationen). So kriege ich mal einen stärkeren Gegnern mit ein bisschen Vorgabe, mal schwächere umgekehrt, mal gleich starke, und kann immer versuchen, mein Rating zu verbessern. Analyse gibt’s auch, wenn auch rudimentär. Macht einfach mehr Spaß, als sich ein ums andere Mal von 9-dan Katago zerstören zu lassen. Das Brett ist gut designed, funktioniert gut auf Tablet und Handy. Nur, wenn Du 2-dan oder höher bist, ist’s vielleicht nicht der optimale Lehrer (hat wohl etwa 6-dan).

### 5/5 — Exactly what I wanted

*2022-03-26*

The ranked mode automatically adjusts the computer difficulty to your level (up to 5dan) as your rank is updated with each game and can be played on 9*9, 13*13 and 19*19 boards.

### 5/5 — So far so good

*2021-06-04*

I have enjoyed the layout and analytics when playing against the AI. sometimes I see not the best moves played by the AI, but perhaps this is appropriate for the difficulty level I have chosen. Great!

### 3/5 — Unable to load SGF file from Google drive(url).

*2021-04-27, version 1.1.4*

I found it is unable to load SGF file from the internet( cloud) although there is the function in load game.

### 5/5 — Superb stand-alone iOS Baduk app

*2021-02-26*

I’ve owned & played CrazyStone for almost 2 years now. Runs seamlessly on iOS, I’m 7-8 kyu and can beat this app at only 6-7 kyu, no lower, so it’s pretty accurately rated. You set the computers strength by Dan-kyu, so great flexibility. It’s much stronger than me if I “open the throttle” on its engine & if you search YTube, can see older vids of BattsGo Dwyrin, Hajin Lee, Hanayeol, and other high Dan players engaging w CrazyStone. Although one can play bots, like OGS, those require internet or cell connection; CS is a standalone app that can be played anywhere without data connection.  Simple setting, saves all your games in sgf, can play human v human if you want to play friend & have no real board or are traveling (train, etc). With SmartGo Kifu moving to new subscription format, CS may be the best one-time paid iOS Go app. I love it. No relationship to game creator, just happy customer.

### 5/5 — Very solid app.

*2021-01-28*

High price tag, but I splurged anyway. It’s six dollars a year for the premium subscription inside the non Pro version for comparison. 

It doesn’t actually say this anywhere, but FYI there are no ads like in the non Pro version. A major reason I bought it.  

I am SDK trying to improve with many small-board games played quickly. The AI is strong (and pleasantly quick) when it tries (high Dan setting), but will allow the occasional odd mistake at weaker settings (play a bad ladder, overlook a big capture).

The rating system is very nice.  No real bugs that I can find. GUI is a bit kitsch but not distracting. 

Haven’t tried SGF file management yet.

### 1/5 — Impossible de faire analyser ses sgf par l’AI

*2020-09-04*

Je suis déçu, l’analyse des sgf ne fonctionne pas alors que c’est pour cela que j’avais acquis une licence

### 5/5 — Top Notch

*2020-06-24*

This is probably the best Go/Baduk app for IOS. Well worth the money for a solid, professional quality game with so many features. I spoke with UNBALANCE and they do indeed intend to keep up with bug fixes and IOS changes. I recommend this over the other subscription based version, but that’s a personal choice. The engine is more than strong enough for me. I especially enjoy the rating and analysis modes. Also, this version supports landscape.

## Frequently asked questions about CrazyStone DeepLearning Pro

### What is CrazyStone DeepLearning Pro?

CrazyStone DeepLearning Pro is a sophisticated application for playing the board game Go. It utilizes advanced deep learning technology combined with Monte Carlo Tree Search to provide a strong AI opponent. The app is designed for both enjoying the game and improving your Go skills.

### What are the key features of this Go app?

Key features include 20 distinct levels of play ranging from 15k to 5d, an analysis mode to review your games and saved SGF files, and a rating mode to track your progress. It also supports various board sizes, human vs. computer and human vs. human gameplay, and SGF file import/export.

### How much does CrazyStone DeepLearning Pro cost?

Based on the provided information, this application is a paid app. There are no mentions of in-app purchases or advertisements, indicating a one-time purchase model.

### What are the compatibility requirements for CrazyStone DeepLearning Pro?

The description does not explicitly state the operating system or device compatibility. However, as a mobile application, it is expected to be available on major mobile platforms like iOS and Android.

### How can this app help me improve at Go?

The app helps improve your Go skills through its strong AI opponent across 20 difficulty levels, allowing you to practice against a challenging player. The analysis mode lets you review your games move-by-move, identify mistakes, and understand strategic nuances, while the rating mode tracks your progress over time.

## Version history (last 5 releases)

### 1.1.4 — 2019-01-19

fixed some minor problems.

### 1.1.3 — 2018-09-06

Stability improvements

### 1.1.2 — 2018-01-09

Changed App Name to 'CrazyStone DeepLearning Pro'

### 1.1.1 — 2017-08-07

fixed some minor problems.

### 1.1.0 — 2017-05-17

Load/Save game record feature has been upgraded.
Added rating mode for 13x13 board.
Added time warning sound and animation for timed games.
Adjusted the stone placement for cursor input method.

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All apps by UNBALANCE Corporation: https://appshunter.io/developer/358617691

## Related topics

[crazystone deeplearning pro](https://appshunter.io/ios/topics/crazystone-deeplearning-pro) · [crazystone deeplearning](https://appshunter.io/ios/topics/crazystone-deeplearning) · [cslearning](https://appshunter.io/ios/topics/cslearning)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-15.*