Show HN: Notation – iOS chess coach with AI that talks to you (BYOK Claude)

Category: ai-ml

Tags: chess, ai-coaching, ios-app, personalized-learning

Score: 6.7/10 (Innovation: 7, Technical: 6, Documentation: 5, Utility: 7)

Notation is a chess coaching app for iOS/macOS that provides AI-powered voice commentary and personalized coaching through 'Nadia', plus a 'Shadow' feature that learns and mimics your playing style. It's interesting because it combines chess analysis with conversational AI (using BYOK Claude) and adaptive coaching tailored to player skill levels, moving beyond traditional engine analysis to more human-like instruction.

Target audience: chess players, mobile gamers, learning enthusiasts

Repository: https://notationchesscoach.app

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