Notation vs ChessMate

Notation is a chess coaching app that teaches you why — not just what. Every chess evaluation comes from Stockfish 18, running entirely on your device. Every pattern, weakness, and tactical motif is detected by hand-tuned on-device classifiers built on decades of coaching theory. The language model's only job is the last step: explaining what the analysis found, in plain English, like a coach sitting next to you. The chess is never generated. It's explained. THREE COACHING FRAMEWORKS Notation is the first chess app to operationalise multiple grandmaster-level coaching frameworks as deterministic measurement: • Dan Heisman's seven positional elements — Mobility, Vulnerability, Centre Control, Coordination, Speed, Time, Flexibility — measured per-position with super-GM baselines • Jeremy Silman's coaching emphasis frames — fifteen frames choosing what to teach at each moment • Jacob Aagaard's positional predicates — Where are the weaknesses? Which is the worst-placed piece? What's the opponent's plan? All computed on-device. All deterministic. The same principles human coaches have used for decades, encoded into classifiers that run before the language model ever sees the position. GAME REVIEW Every game gets a coherent on-device review — no API key needed, no internet, no cost. Template-driven narrative against the full coaching substrate. When you want depth, upgrade once with your own Anthropic or OpenAI API key, o ruse the On Device LLM with no additional costs and the richer review becomes the permanent artefact for that game. Nadia comments on at most six moments — only the ones worth learning from. PDF export of every review. PLAYER PROFILE Style axes — Aggression, Tactical Alertness, Positional Play, Endgame — derived from the substrate with confidence bands. The seven Heisman elements sit below as evidence. Full-screen iPad dashboard. PDF coaching report you could hand to a human coach. OPPONENT SCOUTING & MATCHUP REPORTS Scout reports surface the full eight-axis substrate on any opponent. How-to-play-against framing with concrete suggestions. Player-vs-opponent comparison across all axes with weakest-phase detection. SHADOW — YOUR CHESS TWIN Shadow learns how you play and saves checkpoints. Play yourself from six months ago. See how far you've come. Coming soon: calibrate Shadow to your real-life rivals by importing their games. PLAY ON YOUR PHYSICAL BOARD Pair with Chessnut Air, Pro, Go, Air+ and Move over Bluetooth. Notation tracks every move on real wood while Nadia coaches. PRIVACY BY DESIGN Stockfish on-device. All coaching classifiers on-device. Cohort baselines on-device. Optional cloud AI is bring-your-own-key — your Anthropic or OpenAI API key, your account, your data. We never see it. Leave the field blank and Notation works fully without it. IMPORT YOUR GAMES Connect Lichess or Chess.com. Import PGN files. Nadia analyses everything in the background. £2.99. One-off. No subscription. No ads. No tracking. Yours forever.

ChessMate is live online chess and serious training in one clean, focused app. Play rated games against real opponents, warm up against an always-available practice opponent, and sharpen your tactics with a library of more than 1,000 rated puzzles. LIVE ONLINE MULTIPLAYER Jump into a live rated game in seconds. Choose bullet, blitz, rapid, or classical, tap Find Game, and matchmaking pairs you with another player in real time. Every rated game counts towards your Elo, so each win moves you up the ladder. CHESSMATE COACH Never wait for an opponent. When the queue is quiet, ChessMate Coach — your always-available practice opponent — steps in so you can start a live game straight away. Perfect for warming up before a rated match or fitting in a quick game at any hour. DAILY PUZZLE Start each day with a fresh tactical puzzle. The daily puzzle is free for everyone and rotates every 24 hours, so there is always a new problem waiting when you open the app. PUZZLE LIBRARY Work through more than 1,000 rated tactical puzzles covering forks, pins, skewers, discovered attacks, and the other patterns that decide most games at club level. Each puzzle is rated from beginner to master, so you are always challenged at the right level. PLAY THE COMPUTER Prefer a solo game? Play against the computer at a level that suits you whenever you want a game entirely on your own terms. GAME ANALYSIS Review your games move by move after you play. Spot the turning points, learn from your mistakes, and bring the lessons into your next game. LEADERBOARD See where you stand against the wider ChessMate community. The global leaderboard ranks players by rating, so you always know who is climbing and how far you have to go. ELO RATINGS Track separate Elo ratings for bullet, blitz, rapid, and classical play, plus an overall rating that summarises your form. Your profile keeps a record of every rated game so you can watch yourself improve over time. CLEAN, MODERN INTERFACE ChessMate has a focused, distraction-free interface with a tasteful dark mode, a familiar piece set, and accessibility-friendly contrast. Everything is one tap away from the main board. SIGN IN WITH APPLE ChessMate supports Sign in with Apple alongside email-and-password accounts. You stay in control of your data, and account deletion is one tap away from the Settings screen. SUBSCRIPTION TIERS ChessMate is free to download and play. Optional auto-renewing subscriptions support development and unlock additional content as it becomes available: Gold — 1-month subscription, £2.99/month Gold — 12-month subscription, £29/year (≈£2.42/month) Platinum — 1-month subscription, £4.99/month Platinum — 12-month subscription, £49/year (≈£4.08/month) Diamond — 1-month subscription, £9.99/month Diamond — 12-month subscription, £99/year (≈£8.25/month) Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Subscriptions may be managed and auto-renewal turned off in your Apple ID Account Settings after purchase. PRIVACY ChessMate does not sell your data and does not show third-party ads. You can delete your account, including all rating history and gameplay data, directly from the Settings screen. Download ChessMate today — play live, solve the daily puzzle, and watch your rating climb. Terms of Use (EULA): https://chessmate.wolftechnologies.co.uk/terms.html Privacy Policy: https://chessmate.wolftechnologies.co.uk/privacy.html