Comparison

Go Eye vs Tesuji Library

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

Head to head
About

Go Eye

This app is a comprehensive tool for viewing and editing Go game records (SGF). It offers deep integration with professional game databases, multiple viewing modes including AR, and the ability to download games from the web. Users can also create and manage local game collections and even generate SGF from images.

Highlights
  • Professional Go game database integration
  • Multiple viewing modes (flat, 3D, AR)
  • Download games from web SGF links
  • Local game organization and management
  • Full SGF editing with variations and comments
  • Image recognition for SGF generation
Features
Read full description

The most advanced full-fledged SGF viewer and editor on iOS devices, seamlessly integrated with the web to support downloading of unlimited and most fresh professional go games, with a clean and simple user interface. + Deep integration with the professional go database from go4go.net so that you can access latest professional games by just a tap from go4go's rich resources, and search the desired games from the database by criteria like player names and tournaments, etc. + Clean and simple UI built on top of the deep technologies and elegant iOS platform. You can replay games in normal plain flat board with color or black/white mode, 3D perspective view, or browse the game like reading a real book. Even you can view the game with real 3D go ban model through Argument Reality technologies (available for devices running iOS 11+). + Web integration goes beyond browsing go4go database to support downloading games from any web site with SGF links. You can use the in-app web browser to view a web site with SGF resources and download them into your device with a tap on the link. Even with running games which are updated in remote server from time to time can be downloaded and updated with pull down gesture. The in-app browser supports downloading games from links to a single SGF file, or a Zip/RAR archive. + Local games downloaded or created manually can be organized in groups. Games starred are kept in favorite page. Games deleted are protected by keeping them in trash folder until you decide to delete them permanently or restore them back. You can search games by user names or tournament names in local game resources. + Full SGF editing features for complex SGF games with variations and comments. You can also transform the games by flipping and rotating a game. Scoring an end game is provided. + Support AirPlay with a new board viewing scheme mirroring on big TV screens. + Including image recognition for user to generate SGF from images. Work for computer generated board images with 90%+ recognition rate. Support real life board photos from 1.8.0 version. But don't buy if only for this feature as it is not the most advanced image recognizer now (was in its early release). + Many features hidden in small details. You can play with the settings and find many handy small shining things. The nearly 10-year old app was updated and polished continuously, with inputs from various go fans all over the world. Let's keep the go app standard high together.

About

Tesuji Library

Enhance your Go game with this app, focusing on skillful moves and strategic plays. Learn to execute clever tactics to improve your reading ability and win more games.

Highlights
  • Study Go game skills
  • Learn tesuji (skillful moves)
  • Improve reading ability
  • Practice strategic plays
  • Analyze life and death situations
Features
Currently charting
Read full description

Go Game - Tesuji is the top app for you to study and improve your go game skill. A Japanese term used in the games of go or shogi. A tesuji (手筋) is a clever play, the best play in a local position, a skillful move. Tesuji is derived from suji (筋), which means "line of play". The opposite of tesuji is zokusuji, which can be translated as "crude line of play", and also referred to as anti-suji, or a vulgar move depending on the situation. Tesuji is one of the important aspects of the game in which a player exerts his or her ability to "read ahead". In the game of Go, they are used in life and death situations (tsumego), in order to obtain initiative (sente), to capture stones, to gain extra points in the yose, or to otherwise save a seemingly unfavorable situation.

Screenshots

Go Eye4 screens
Tesuji Library4 screens

Verdict

The call

The clearest difference is price: Tesuji Library at $5.99 against Go Eye's $19.99. Tesuji Library also leads on chart position (#163 vs unranked). Go Eye's advantage is rating (4.5 vs 4.0) and ratings volume (4 vs 1). On review sentiment, update cadence, ads and in-app purchases 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

Go Eye costs $19.99 and Tesuji Library $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Go Eye holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 68% of Go Eye's written reviews are positive against 61% of Tesuji Library's.

UpkeepUpdate frequency

Go Eye ships an update every 2 months, Tesuji Library every 4 months. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.

Scorecard5 real differences · 6 level
Go Eye versus Tesuji Library: the parameters behind the verdict, then further details
ParameterGo EyeTesuji Library
Price$19.99$5.99 — better
Rating4.5 (4 ratings) — better4.0 (1 ratings)
Positive reviews68.0% of reviews — better60.9% of reviews
Number of ratings4 — better1
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#163 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better12.0
Further details — not scored
Size23 MB243 MB
Age rating17+4+
DeveloperWenzhang Zhu延正 王

Customer experience

Go Eye

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews25 reviews
Positive68.0%
Neutral16.0%
Negative16.0%

Tesuji Library

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews23 reviews
Positive60.9%
Neutral13.0%
Negative26.1%

In-app purchases

None

Go Eye

No in-app purchases

None

Tesuji Library

No in-app purchases

Questions

Is Go Eye free?
Go Eye costs $19.99, with no in-app purchases.
Is Tesuji Library free?
Tesuji Library costs $5.99, with no in-app purchases.
Which has better reviews, Go Eye or Tesuji Library?
Go Eye is rated higher. Go Eye averages 4.5 out of 5 from 4 ratings, while Tesuji Library averages 4.0 from 1 ratings.
Do Go Eye or Tesuji Library have ads?
Neither Go Eye nor Tesuji Library shows ads.
Which is updated more often, Go Eye or Tesuji Library?
Go Eye ships an update every 2 months, and Tesuji Library every 4 months. Most recently, Go Eye was updated on September 22, 2026 and Tesuji Library on September 17, 2026.

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