Pocket Chess Book is a feature-rich chess PGN editor designed for iPhone users. This app offers a blazing fast experience for chess enthusiasts, with the ability to work offline (excluding iCloud sync and openings book). It provides a full PGN editor mode, library scan and search functionalities, and the option to practice lines with the computer. Additionally, users can instantly open PGN files within the app, access the lichess openings explorer (internet required), utilize the board editor, analyze positions with the latest Stockfish NNUE engine, store unlimited game collections, browse move variations, read annotated games, and look forward to regular updates.

Pocket Chess Book stands out as a comprehensive tool for chess players looking to enhance their game and dive deep into the world of chess analysis and preparation.