# One More Stone — Play Go & Review Games

> Play Go & Review Games (iPhone/iPad app by Twist Labs.)

- Source: https://appshunter.io/ios/app/one-more-stone/id6819893352 (this page in markdown: same URL + `.md`)
- Developer: [Twist Labs](https://appshunter.io/developer/6800055415)
- Category: Games, Board
- Price: $4.99
- Age rating: 4+
- Requires: iOS 26.5 · 111 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China)
- Released: 2026-11-03
- Data updated: 2026-11-04

## What is One More Stone?

Play Go and review your games with KataGo in a simple, intuitive interface. One More Stone is available on iPhone, iPad, and Mac, with no ads and no subscription.

PLAY AT YOUR LEVEL
Play against a computer with calibrated difficulty, or play with a friend on the same device. Choose a 9×9 board for a shorter game, or settle into 13×13 or full-size 19×19. Japanese and Chinese scoring are supported, with adjustable handicap and komi.

PRACTICE WITH HELP
Practice mode gives you room to experiment, with undo and redo available throughout the game. When you want help with a position, hints show KataGo’s top three moves. Territory estimates let you see where each player is likely to make points.

FIND THE MOVES WORTH REVIEWING
The move-quality timeline helps you find mistakes worth a closer look. Compare your moves with KataGo’s suggested alternatives and see estimates of points lost. For games played in One More Stone, you can explore different continuations without changing the saved game.

KEEP YOUR GAMES TOGETHER
Your games are saved and synced through iCloud, so you can start a game on your iPhone and continue on your Mac, or the other way around. You can review your saved games on any of your devices, or export them as SGF to use in other Go programs. Import SGF files to review games played elsewhere.

SEE HOW YOUR PLAY EVOLVES
See your win rate against the computer at each rank and how your move quality changes over time. Statistics track strong moves and the frequency of mistakes. Practice games are excluded by default, but you can include them if you prefer.

PLAY AND ANALYZE OFFLINE
You don’t need an internet connection to play against KataGo or use the review tools. Your saved games remain available offline, too. iCloud sync requires a connection.

## Is One More Stone safe?

Not enough ratings yet to assess One More Stone.

## Is One More Stone legit?

One More Stone has limited verification signals. The AppsHunter Legitimacy Score for One More Stone is 50 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-11-03

No release notes.

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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 2026-11-04.*