Comparison

™ Reversi 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

™ Reversi

Engage in a classic two-player strategy board game where players flip opponent disks to gain board control. Challenge yourself against AI with multiple difficulty levels or play with friends. Customize your game with various board sizes and themes.

Highlights
  • Undo function
  • AI with five difficulty levels
  • Customizable board and piece sets
  • Multiple board sizes (6x6, 8x8, 10x10)
  • Save/load unfinished games
  • Timer-based games
  • Experience points system
Features
Read full description

Reversi is a strategy board game for two players, played on an 8×8 uncheckered board. Players take turns placing disks on the board with their assigned color facing up. Any of the opponent's disks that are in a straight line and bounded by the disk just placed and another disk of the current player's color are flipped to the current player's color. The object of the game is to have the majority of disks displaying your color when the last playable empty square is filled. Perfect for enjoying with family and friends, you can also challenge yourself against AI with five levels of difficulty. Be warned, overcoming the highest difficulty AI is a true challenge! This game is extremely well-known in Japan as "Othello." While players who enjoy Othello might appreciate the strategic challenges of our Reversi app, please note that our product is independently developed and has no official connection to the Othello trademark. Features: Undo function Board editor Custom board sets and piece sets Supports standard 8x8 as well as 6x6 and 10x10 board sizes. Save/load unfinished game AIs with five levels of difficulty Custom background themes, avatars, and sounds Timer-based games You'll also gain experience points by winning against the AI (+1 for Easy, +3 for Medium, +5 for Hard, and +7 for Expert). Download Reversi now and immerse yourself in a world of strategic gameplay, captivating graphics, and tactical challenges!

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

™ Reversi4 screens
CrazyStone DeepLearning4 screens

Verdict

The call

The clearest difference is ads: ™ Reversi at none against CrazyStone DeepLearning's shown. ™ Reversi also leads on iOS requirement (13.0 vs 15.0). CrazyStone DeepLearning's advantage is update cadence (every 2 months vs every 7 months) and ratings volume (1K vs 72). On price, rating, in-app purchases and monetization model 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. ™ Reversi sells 1 one-off in-app purchase 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 — 4.6 for ™ Reversi against 4.7 for CrazyStone DeepLearning. That said, the two scores are not equally well evidenced: CrazyStone DeepLearning has 1K ratings behind it against 72, so its average is the more settled of the two. Written reviews are what separate them: 58% of ™ Reversi's written reviews are positive against 71% of CrazyStone DeepLearning's.

UpkeepUpdate frequency

™ Reversi ships an update every 7 months, CrazyStone DeepLearning every 2 months. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

Scorecard5 real differences · 5 level
™ Reversi versus CrazyStone DeepLearning: the parameters behind the verdict, then further details
Parameter™ ReversiCrazyStone DeepLearning
PriceFreeFree
Rating4.6 (72 ratings)4.7 (1K ratings) — better
Positive reviews57.9% of reviews71.0% of reviews — better
Number of ratings721K — better
Update frequencyEvery 7 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size72 MB165 MB
Age rating4+4+
DeveloperVM Mobile TeamUNBALANCE Corporation

Customer experience

™ Reversi

All ratings72 ratings
Positive88.9%
Neutral8.3%
Negative2.8%
Written reviews19 reviews
Positive57.9%
Neutral26.3%
Negative15.8%

CrazyStone DeepLearning

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

Bugs and requests

™ Reversi

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

™ Reversi

One-time1
  • Premium$3.99
1 purchases

CrazyStone DeepLearning

Subscriptions1
  • CrazyStone DL Subscription$2.991 Month

Questions

Is ™ Reversi free?
™ Reversi 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, ™ Reversi or CrazyStone DeepLearning?
CrazyStone DeepLearning is rated higher. ™ Reversi averages 4.6 out of 5 from 72 ratings, while CrazyStone DeepLearning averages 4.7 from 1K ratings.
Do ™ Reversi or CrazyStone DeepLearning have ads?
CrazyStone DeepLearning shows ads; ™ Reversi does not.
Which is updated more often, ™ Reversi or CrazyStone DeepLearning?
™ Reversi ships an update every 7 months, and CrazyStone DeepLearning every 2 months. Most recently, ™ Reversi was updated on October 16, 2026 and CrazyStone DeepLearning on October 17, 2026.

Other comparisons