Chessbook · by Toolbelt
Your games.
Your library.
Chessbook PGN Library is a private chess notebook for your own games. Paste PGNs, annotate critical positions, review opening patterns, and keep your repertoire close without accounts, ads, or cloud sync.
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Why we built it
Most chess apps optimize for live games, engines, courses, or public profiles. Chessbook focuses on the private study loop after your game is over: paste the PGN, write the lesson, tag the opening, and revisit the line before the next round.
What's inside
- PGN import / export — paste standard PGN from your games or analysis board.
- Mark positions with comments — flag the ply where you lost the thread.
- Opening tree analyzer — your score by ECO and by root moves.
- Repertoire tracker — the lines you're studying, marked reviewed.
- Position diagrams — render any marked ply as a clean diagram.
- On-device only — no cloud, no account, no login.
What's not inside
- No engine play. Chessbook is a log, not an opponent.
- No ads, social feed, AI credits, or cloud account requirement.
- No third-party analytics SDKs. No crash SDKs. No ads.
- No cloud round-trip. Your games never leave your phone.
Pricing
$9.99
Monthly Pro · cancel anytime
$59.99
Yearly Pro · best for active tournament players
Free for your first 50 games. Chessbook Pro unlocks unlimited games, opening-tree review, repertoire tracking, position diagrams, and PGN export through App Store monthly or yearly subscriptions.