# Go Lab vs Notation

The clearest difference is review sentiment: Go Lab at 14% against Notation's 0%. On price, update cadence, ads and in-app purchases there is nothing between them.

Go Lab costs $2.99 and Notation $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Go Lab ships an update every 3 days, Notation every 5 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Go Lab | Notation |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | — | **[4.7 (6 ratings)](https://appshunter.io/ios/app/notation-chess-coach/id6759826744/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | **14.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 days |
| Monetization | Paid | Paid |
| Size | 28 MB | 563 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [koji ozono](https://appshunter.io/developer/1826482515) | [Darren Cox](https://appshunter.io/developer/1874926497) |

## What reviewers say

### Go Lab

[App page](https://appshunter.io/ios/app/go-lab-ai-baduk-katago-engine/id6757245003)

This app offers a powerful AI engine for playing and analyzing the game of Go. It supports various board sizes and includes features like move prediction, blunder analysis, and offline play. Users can also spectate and play games on OGS.

**Highlights:** KataGo AI engine integration, Supports 9x9, 13x13, 19x19 boards, Offline CPU matches and 2-player mode, Real-time candidate move display with win rate, Post-game blunder analysis reports, OGS spectating and playing, Tsumego mode with 347 problems

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Notation

[App page](https://appshunter.io/ios/app/notation-chess-coach/id6759826744)

This app provides in-depth chess coaching by explaining the 'why' behind moves, not just the 'what'. It uses advanced on-device analysis and multiple coaching frameworks to offer personalized game reviews, player profiles, and opponent scouting.

**Highlights:** On-device chess analysis with Stockfish 18, Multiple grandmaster-level coaching frameworks, Detailed game reviews and player profiles, Opponent scouting and matchup reports, Play with physical chess boards via Bluetooth, Privacy-focused design with no tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Go Lab free?

Go Lab costs $2.99, with no in-app purchases.

### Is Notation free?

Notation costs $2.99, with no in-app purchases.

### Do Go Lab or Notation have ads?

Neither Go Lab nor Notation shows ads.

### Which is updated more often, Go Lab or Notation?

Go Lab ships an update every 3 days, and Notation every 5 days. Most recently, Go Lab was updated on October 31, 2026 and Notation on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*