# Sudam - Go/Baduk AI — Offline AI Go · Play & Review

> Offline AI Go (Baduk) app for play, review, and learning. (iPhone/iPad app by INPHIL CHOI.)

- Source: https://appshunter.io/ios/app/sudam-gobaduk-ai/id6795918519 (this page in markdown: same URL + `.md`)
- Developer: [INPHIL CHOI](https://appshunter.io/developer/6785766361)
- Category: Games, Board
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 39 MB
- Languages: American English
- Released: 2026-07-30
- Data updated: 2026-08-23
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/sudam-gobaduk-ai/id6795918519/reviews.md

## What is Sudam?

Sudam is a fully offline, on-device AI Go (Baduk) app.

• AI Game — 9x9/13x13/19x19 boards, 2-9 stone handicap, 10 difficulty levels, live win-rate / score-lead / candidate-move overlay.
• Game Review — Import any SGF and get an automatic full-game analysis that flags mistakes (5%p+ win-rate drops). Tap the graph to jump to any move.
• Academy — 12 interactive rule tutorials and 320 life-and-death problems across 4 levels, with instant judgement and hints.
• Lesson Mode — Free stone setup, markers, commentary. Everything round-trips losslessly through SGF.
• Auto performance tuning — A first-run benchmark picks the right model and search budget for your device.
• Zero data collection — No account, no server, no tracking. Your games stay on your device.

## Key features

- Offline AI game with multiple board sizes and difficulty levels
- Automatic game analysis with mistake flagging
- Interactive rule tutorials and life-and-death problems
- Lesson mode with free stone setup and commentary
- On-device performance tuning
- Zero data collection and no account required

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/sudam-gobaduk-ai/id6795918519/reviews.md

### 5/5 — 非常好的app

*2026-08-19*

非常好的app，简约，干净，实用。希望改进一点，教学模式自由摆字里，黑子落子后，希望能自动切换到白子，而不是每一步都需要手动切换黑白子。最后感谢作者，看得出作者的热爱。

### 2/5 — In fact, the model is very stupid

*2026-08-17*

Even when using the Katago model, the AI opponent still plays randomly.

**Developer response:** Thank you for this report — you were right, and it was a real bug on our side, not just weak play.

Below Lv.10 the app deliberately picks among KataGo's candidate moves, but a clamping error piled most of the probability onto the *worst* candidate (about 80% at the default Lv.5), and the search was so shallow that those candidates had only 1-2 visits — moves the engine had never really evaluated. So the AI genuinely did play near-random moves.

We reproduced it with the same b10 model and fixed it: the AI now only plays moves the engine actually searched, each level caps how much win rate it may give up (Lv.10 always plays the best move), search was deepened, and the default is now Lv.7. This ships in the next update.

感谢反馈！这确实是我们的程序缺陷：低于 Lv.10 时选点逻辑把大部分概率压在了最差的候选着法上，而且那些着法几乎没有被搜索过，所以 AI 看起来像在乱下。我们已复现并修复，下个版本会更新。

## Frequently asked questions about Sudam

### Does Sudam have ads?

No, Sudam is completely ad-free. The app is designed to provide an uninterrupted Go playing and learning experience without any advertisements.

### Can I play Sudam offline?

Yes, Sudam is a fully offline app. All features, including AI gameplay, game review, and academy lessons, can be used without an internet connection.

### What board sizes does Sudam support?

Sudam supports 9x9, 13x13, and 19x19 board sizes for AI games. This allows players to practice on different scales, from quick games to full-length matches.

### How does Sudam's AI game analysis work?

Sudam's AI game analysis automatically reviews imported SGF files, flagging mistakes with win-rate drops of 5% or more. You can tap the graph to jump to any move for detailed review.

### What is the Academy feature in Sudam?

The Academy in Sudam includes 12 interactive rule tutorials and 320 life-and-death problems across 4 difficulty levels. It provides instant judgment and hints to help users learn and improve.

### Is Sudam suitable for beginners?

Yes, Sudam is suitable for beginners. It offers interactive rule tutorials and a range of difficulty levels in its AI games, along with life-and-death problems to help new players learn the game.

### What devices does Sudam support?

Sudam is supported on iPhone and iPod devices. It is designed to run efficiently on these Apple mobile platforms.

### How often is Sudam updated?

The latest version of Sudam is 1.0.4, released on August 22, 2026. The app was initially released on July 30, 2026, indicating a recent update.

## Version history (last 4 releases)

### 1.0.4 — 2026-08-22

Both issues raised in your reviews are fixed, and Traditional Chinese is now supported.

• Fixed the AI playing seemingly random moves — the per-level candidate-move selection was rewritten and search volume increased
• Lesson mode now switches black↔white automatically after each stone (can be turned off in Settings)
• Traditional Chinese added — Taiwan, Hong Kong and Macau now see the app in Traditional Chinese
• Fixed SGF import failing silently

Note: this version requires iOS 15 or later.

### 1.0.2 — 2026-08-20

Fixed the AI playing seemingly random moves.

• Fixed a move-selection bug that made the weakest candidate get picked at lower levels
• The AI now only plays moves it actually searched
• Difficulty now means "how much win rate it may give up", so levels feel distinct (Lv.10 always plays the best move)
• Slightly deeper search; new games now default to Lv.7

Thanks to the reviewer who reported this.

### 1.0.1 — 2026-08-11

• One-time review prompt after your first finished game
• Stability improvements

### 1.0 — 2026-07-30

No release notes.

## More apps by INPHIL CHOI

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- [myTV - Cast Web Videos to TV](https://appshunter.io/ios/app/mytv-cast-web-videos-to-tv/id6792300908)
- [음성노트 - AI 녹음 텍스트 변환](https://appshunter.io/ios/app/ai/id6795930564)
- [LottoLab: Lotto Number Picker](https://appshunter.io/ios/app/lottolab-lotto-number-picker/id6796949878)

All apps by INPHIL CHOI: https://appshunter.io/developer/6785766361

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*