Comparison

Little Go vs CrazyStone DeepLearning

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

Head to head
About

Little Go

Play the strategic game of Go on your iPhone or iPad. Challenge a human opponent or test your skills against a powerful AI. Customize game settings, analyze moves, and save your progress.

Highlights
  • Multiple board sizes (7x7 to 19x19)
  • Play against AI or human opponent
  • Adjustable AI strength
  • Score calculation (area/territory)
  • Handicap stone placement
  • Customizable rulesets
  • Save and load games
Features
Read full description

Little Go is a free and open source iOS application that lets you play the game of Go on the iPhone or iPad. You can play against another human (on the same device), or against the computer. The computer player is powered by the open source software library Fuego (http://fuego.sf.net/). The minimum requirement for running this version of Little Go is iOS 16.0. Features: - Board sizes between 7x7 and 19x19 (start a new game to change the board size) - Let the computer player suggest a move or immediately play the move for you - Calculate the score at any time during the game (area scoring is the default, territory scoring can be selected at the start of a new game) - Adjust the computer's playing strength and resign behaviour by selecting from a number of presets, or by fine-tuning advanced settings - Play even games, or games with 2-9 handicap stones (fixed stone placement) - Select from 5 pre-defined rulesets when you start a new game, or adjust game rules to your preference (komi, ko rule, area/territory scoring system, number of passes to end game, resume play by alternating/non-alternating play, four passes end game) - Optionally play with time limits (Main time only, Overtime only, Main time + Overtime), with a choice from 5 Overtime systems - Place arbitrary black and white stones for initial board setup before a game starts - View board positions for moves played earlier during the game - View and create game variations - Discard moves (aka "undo") - Display move numbers and coordinate labels - Zoom & scroll board - Create and edit board and move annotations (e.g. good/bad move, good position for black/white, etc.) and add textual notes to a position - Mark intersections on the board with symbols, markers and labels, and draw arrows or lines on the board - Display player influence (aka territory statistics) for an estimate who owns an area - Computer vs. computer game for entertainment - Save & load games to/from the archive using the SGF file format - Support for almost all properties of the SGF file format, with strict conformance to the specification - Use file sharing to transfer saved games from your iOS device to your computer, and vice versa - Import/export game files from/to other apps on your device (e.g. Mail, DropBox) - In-app user manual - Submit bug report email from inside the app (yes, this *is* a feature :-)) - For the technically inclined: Watch what happens behind the scenes when Little Go and Fuego talk to each other over the Go Text Protocol (GTP) Your contribution in any form (coding, UI design, testing, bug reports, creating an app video preview, website design) is welcome - please contact me or visit the support website to find out more. A note about the project state: Several years of development have gone into Little Go since its inception in January 2011. The app now has a feature set that is, I believe, quite nice :-) for a free program. My main focus therefore lies on fixing any remaining bugs (of which I am sure there are plenty) and keeping the app running under future versions of iOS. Little Go is released under the Apache License 2.0 (http://www.apache.org/licenses/LICENSE-2.0).

About

CrazyStone DeepLearning

Play the game of Go against a powerful AI or other players worldwide. Test your skills with certification exams and track your progress in rating mode. Offers various board sizes and difficulty levels for all players.

Highlights
  • Online Go games against global players
  • IAGA Rating Certification Tests
  • 17 levels of play from 15k to 2d
  • Export/import SGF game files
  • Rating Mode with game history
  • Human vs Computer and 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 ! *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 https://www.unbalance.co.jp/privacy/en/igominna/ Terms of Use https://www.unbalance.co.jp/eula/en/igominna/ * This app is certified by International AI Go Association

Screenshots

Little Go4 screens
CrazyStone DeepLearning4 screens

Verdict

The call

The clearest difference is rating: CrazyStone DeepLearning at 4.7 against Little Go's 3.3. CrazyStone DeepLearning also leads on review sentiment (72% vs 50%) and update cadence (every 2 months vs every 4 months). Little Go's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, device support and iOS requirement 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

Both are free to download. CrazyStone DeepLearning sells 1 in-app purchase, starting at $2.99 per month. Little Go asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CrazyStone DeepLearning holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: CrazyStone DeepLearning has 1K ratings behind it against 120, so its average is the more settled of the two. Written reviews point the same way: 50% of Little Go's written reviews are positive against 72% of CrazyStone DeepLearning's.

UpkeepUpdate frequency

Little Go ships an update every 4 months, CrazyStone DeepLearning every 2 months. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

Scorecard7 real differences · 3 level
Little Go versus CrazyStone DeepLearning: the parameters behind the verdict, then further details
ParameterLittle GoCrazyStone DeepLearning
PriceFreeFree
Rating3.3 (120 ratings)4.7 (1K ratings) — better
Positive reviews50.0% of reviews71.5% of reviews — better
Number of ratings1201K — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size51 MB165 MB
Age rating4+4+
DeveloperPatrick Naf MoserUNBALANCE Corporation

Customer experience

Little Go

All ratings118 ratings
Positive53.4%
Neutral9.3%
Negative37.3%
Written reviews74 reviews
Positive50.0%
Neutral20.3%
Negative29.7%

CrazyStone DeepLearning

All ratings1,012 ratings
Positive92.7%
Neutral2.8%
Negative4.5%
Written reviews130 reviews
Positive71.5%
Neutral6.9%
Negative21.5%

User reviews

Little Go

From 120 App Store ratings

What we love

  • ✨ Free and open source
  • 🎮 Excellent AI engine
  • 🎛️ Highly customizable settings
  • 🆓 No ads or in-app purchases
  • 🎨 Pleasant graphics

Room to improve

  • ❓ Unclear interface
  • 🕹️ Difficult to place stones
  • 📈 Very difficult for beginners
  • 🔋 High battery consumption
  • 🤔 AI can be too strong

CrazyStone DeepLearning

From 1K App Store ratings

What we love

  • 👍 Great for learning Go
  • 🎮 Enjoyable gameplay
  • 💪 Strong AI opponent
  • 🎨 Good visual design

Room to improve

  • 🙄 Excessive ads
  • ⏱️ Extremely long ads
  • 🤖 AI difficulty too high for beginners
  • 🔒 Inability to close ads

Bugs and requests

Little Go

Reported bugs

9 issues
  • Cannot pass to end the game
  • Human player cannot place stones (sometimes)
  • AI makes illegal moves
  • AI resigns too early
  • Undo button glitches
Show 4 more
  • Game crashes
  • AI plays the same game repeatedly
  • Scoring inaccuracies
  • Forward/fast forward buttons too close

Requested features

7 requests
  • Add a tutorial for beginners
  • Improve UI clarity and intuitiveness
  • Add a demo board for teaching
  • Add a rematch option
  • Add Game Center support for turn-based matches
Show 2 more
  • Option to turn off auto-scoring
  • Add a Windows program version

CrazyStone DeepLearning

Reported bugs

3 issues
  • Issues with input method and stone placement
  • Sound not working
  • Saved game state causing issues with ads

Requested features

5 requests
  • More advanced levels
  • Ability to replay and explore game variations
  • Option to slow down AI response
  • Landscape mode support
  • Analysis mode for premium users

In-app purchases

None

Little Go

No in-app purchases

1 purchases

CrazyStone DeepLearning

Subscriptions1
  • CrazyStone DL Subscription$2.991 Month

Questions

Is Little Go free?
Little Go is free to download, with no in-app purchases.
Is CrazyStone DeepLearning free?
CrazyStone DeepLearning is free to download, with in-app purchases available.
Which has better reviews, Little Go or CrazyStone DeepLearning?
CrazyStone DeepLearning is rated higher. Little Go averages 3.3 out of 5 from 120 ratings, while CrazyStone DeepLearning averages 4.7 from 1K ratings.
Do Little Go or CrazyStone DeepLearning have ads?
CrazyStone DeepLearning shows ads; Little Go does not.
Which is updated more often, Little Go or CrazyStone DeepLearning?
Little Go ships an update every 4 months, and CrazyStone DeepLearning every 2 months. Most recently, Little Go was updated on September 21, 2026 and CrazyStone DeepLearning on September 23, 2026.

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