Comparison

PiyoShogi 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

PiyoShogi

Engage in Japanese chess with a charming AI opponent or challenge another player. Analyze your games with AI comparisons and manage your game records effectively. This app offers a robust Shogi experience for both casual and serious players.

Highlights
  • Play Shogi against AI
  • Two-player Shogi mode
  • AI move comparison
  • Game record analysis
  • Game record management
Features
Read full description

It is a Shogi app to play with cute "chick". Cute but AI is serious. Not only play the game with AI, but also the game against two people as a shogi board, the review function after the game and the game record management function are also substantial. Shogi is a Japanese board game similar to chess. [Main features] 1. You can play the shogi with AI. You can also play with two people as a shogi board. 2. With the analysis function, you can compare your move with AI's move! Also equipped with game record analysis function. 3. It is possible to save and manage the game record against the AI with the game record management function! In addition to playing games in PiyoShogi, you can also read and manage the game records played with other applications. [Terms of Use] https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ [Contact Us] If there is a problem, opinion, request, etc., please contact us from "Send request" of "Menu" button on the application top screen.

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

PiyoShogi4 screens
CrazyStone DeepLearning4 screens

Verdict

The call

The clearest difference is update cadence: PiyoShogi at weekly against CrazyStone DeepLearning's every 2 months. CrazyStone DeepLearning's advantage is ratings volume (1K vs 124). On price, rating, review sentiment and ads 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. PiyoShogi sells 1 in-app purchase, starting at $2.49 per month and CrazyStone DeepLearning sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for PiyoShogi against 4.7 for CrazyStone DeepLearning. That said, the two scores are not equally well evidenced: CrazyStone DeepLearning has 1K ratings behind it against 124, so its average is the more settled of the two. Written reviews are what separate them: 76% of PiyoShogi's written reviews are positive against 71% of CrazyStone DeepLearning's.

UpkeepUpdate frequency

PiyoShogi ships an update weekly, CrazyStone DeepLearning every 2 months. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 8 level
PiyoShogi versus CrazyStone DeepLearning: the parameters behind the verdict, then further details
ParameterPiyoShogiCrazyStone DeepLearning
PriceFreeFree
Rating4.8 (124 ratings) — better4.7 (1K ratings)
Positive reviews76.2% of reviews — better71.0% of reviews
Number of ratings1241K — better
Update frequencyWeekly — betterEvery 2 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size77 MB165 MB
Age rating9+4+
DeveloperSTUDIO-K Inc.UNBALANCE Corporation

Customer experience

PiyoShogi

All ratings124 ratings
Positive95.2%
Neutral1.6%
Negative3.2%
Written reviews42 reviews
Positive76.2%
Neutral4.8%
Negative19.0%

CrazyStone DeepLearning

All ratings1,012 ratings
Positive92.7%
Neutral2.8%
Negative4.5%
Written reviews131 reviews
Positive71.0%
Neutral6.9%
Negative22.1%

Bugs and requests

PiyoShogi

Not enough reviews yet to summarise bugs or requests.

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

1 purchases

PiyoShogi

Subscriptions1
  • Chick feed (Hide Ads)$2.491 Month
1 purchases

CrazyStone DeepLearning

Subscriptions1
  • CrazyStone DL Subscription$2.991 Month

Questions

Is PiyoShogi free?
PiyoShogi is free to download, with in-app purchases available.
Is CrazyStone DeepLearning free?
CrazyStone DeepLearning is free to download, with in-app purchases available.
Which has better reviews, PiyoShogi or CrazyStone DeepLearning?
PiyoShogi is rated higher. PiyoShogi averages 4.8 out of 5 from 124 ratings, while CrazyStone DeepLearning averages 4.7 from 1K ratings.
Do PiyoShogi or CrazyStone DeepLearning have ads?
Both PiyoShogi and CrazyStone DeepLearning show ads.
Which is updated more often, PiyoShogi or CrazyStone DeepLearning?
PiyoShogi ships an update weekly, and CrazyStone DeepLearning every 2 months. Most recently, PiyoShogi was updated on October 17, 2026 and CrazyStone DeepLearning on October 18, 2026.

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