Chessify is a cloud analysis platform that runs Stockfish and Leela Chess Zero on high-performance servers, making it possible to get deep engine analysis significantly faster than running engines locally on a typical laptop or phone. Analysis speeds can reach tens of millions of nodes per second, equivalent to running many parallel engine instances simultaneously.

The platform also includes a game database, PGN manager, opening explorer, and tools for organizing your own study material. Games can be imported and annotated in-app. The iOS and Android apps offer the same cloud analysis capabilities on mobile, making deep analysis accessible from any device.

Chessify offers a free tier with limited analysis speed and a premium subscription for full server power. It is particularly valuable for correspondence players, opening theorists, and anyone who needs faster-than-local engine analysis as part of their preparation.