Comparison

CrazyStone DeepLearning Pro vs Surround

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

CrazyStone DeepLearning Pro

This app offers a powerful Go playing experience powered by deep learning technology. It features 20 levels of play, game analysis tools, and rating modes to help players improve their skills. Supports various board sizes and game modes, including human vs. computer and human vs. human.

Highlights
  • 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
Features
Read full description

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

About

Surround

Play the ancient strategy game of Go online with a global community. Engage in live or turn-based matches, observe ongoing games, and connect with other players. Receive timely notifications for your games and enjoy a sleek dark mode interface.

Highlights
  • Play live and turn-based Go games
  • Observe ongoing games
  • Chat with other players
  • Home screen widget for correspondence games
  • Notifications for game turns
  • Dark mode support
Features
Read full description

Surround is a client to play Go online with other players on the website online-go.com (Online Go Server - OGS). OGS is a very popular Go Server with a friendly community, and this app aims to provide the best OGS experience on iPhones and iPads. Features: - Play Go with other Go players on OGS, either live games or turn-based (correspondence) games. - Observe other live games that are currently being played. - Chat with other players. - Get a glimpse of your correspondence games on your home screen with a widget. - Receive notifications when it is your turn in correspondence games. - Beautiful dark mode. There are many more features on OGS website that I plan to implement into the app gradually, so I hope to have your support to make it happen faster. Let me know if there is any feature you specifically want to have first. This app offers subscriptions for supporting the app's ongoing development. If you decide to participate in the subscriptions: - Payment will be charged to your Apple ID account at the confirmation of purchase. - The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. - Your account will be charged for renewal within 24 hours prior to the end of the current period. - You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. - All purchases are final. I cannot issue refunds for purchases charged to your Apple ID. The Terms of Use can be found at: https://files.honganhkhoa.com/SurroundTerms.html, and the Privacy Policy can be found at: https://files.honganhkhoa.com/SurroundPrivacyPolicy.html.

Screenshots

CrazyStone DeepLearning Pro4 screens
Surround4 screens

Verdict

The call

The clearest difference is price: Surround at Free against CrazyStone DeepLearning Pro's $16.99. Surround also leads on update cadence (fortnightly vs every 4 months) and review sentiment (84% vs 64%). CrazyStone DeepLearning Pro's advantage is in-app purchases (none vs 4) and iOS requirement (10.0 vs 18.0). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Surround is free to download; CrazyStone DeepLearning Pro costs $16.99 up front. Surround sells 4 in-app purchases, starting at $0.49 per month. CrazyStone DeepLearning Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Surround holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 23 and 69 respectively. Written reviews point the same way: 64% of CrazyStone DeepLearning Pro's written reviews are positive against 84% of Surround's.

UpkeepUpdate frequency

CrazyStone DeepLearning Pro ships an update every 4 months, Surround fortnightly. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

Scorecard8 real differences · 2 level
CrazyStone DeepLearning Pro versus Surround: the parameters behind the verdict, then further details
ParameterCrazyStone DeepLearning ProSurround
Price$16.99Free — better
Rating4.3 (23 ratings)4.6 (69 ratings) — better
Positive reviews64.3% of reviews84.2% of reviews — better
Number of ratings2369 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.0 — better18.0
Further details — not scored
Size51 MB39 MB
Age rating4+4+
DeveloperUNBALANCE CorporationHong Anh Khoa

Customer experience

CrazyStone DeepLearning Pro

All ratings23 ratings
Positive82.6%
Neutral4.3%
Negative13.0%
Written reviews28 reviews
Positive64.3%
Neutral21.4%
Negative14.3%

Surround

All ratings69 ratings
Positive89.9%
Neutral1.4%
Negative8.7%
Written reviews38 reviews
Positive84.2%
Neutral5.3%
Negative10.5%

In-app purchases

None

CrazyStone DeepLearning Pro

No in-app purchases

4 purchases

Surround

Subscriptions4
  • Surround App Supporter$0.491 Month
  • Surround App Supporter$1.991 Month
  • Surround App Supporter$4.991 Month
Show 1 more
  • Surround App Supporter$9.991 Month

Questions

Is CrazyStone DeepLearning Pro free?
CrazyStone DeepLearning Pro costs $16.99, with no in-app purchases.
Is Surround free?
Surround is free to download, with in-app purchases available.
Which has better reviews, CrazyStone DeepLearning Pro or Surround?
Surround is rated higher. CrazyStone DeepLearning Pro averages 4.3 out of 5 from 23 ratings, while Surround averages 4.6 from 69 ratings.
Do CrazyStone DeepLearning Pro or Surround have ads?
Neither CrazyStone DeepLearning Pro nor Surround shows ads.
Which is updated more often, CrazyStone DeepLearning Pro or Surround?
CrazyStone DeepLearning Pro ships an update every 4 months, and Surround fortnightly. Most recently, CrazyStone DeepLearning Pro was updated on October 15, 2026 and Surround on October 16, 2026.

Other comparisons