lichess

This free and open-source chess app offers a comprehensive online and offline chess experience. Built by chess enthusiasts, it boasts a large and growing user base (150,000+ daily).

Key Features:

• Diverse Game Modes: Play bullet, blitz, classical, and correspondence chess. Participate in arena tournaments.
• Social Interaction: Find, follow, and challenge other players. Track your game statistics.
• Practice & Learning: Improve your skills with chess puzzles.
• Game Variants: Explore numerous variants, playable online and offline, including Crazyhouse, Chess 960, King of the Hill, Three-check, Antichess, Atomic chess, Horde, and Racing Kings.
• Analysis Tools: Analyze games using local computer evaluation, or leverage server-side analysis with move annotations and game summaries.
• Extensive Resources: Utilize an unlimited opening explorer and endgame tablebase explorer.
• Offline Play: Play against the computer or a friend using the Over The Board mode.
• Additional Features: Includes a standalone chess clock, board editor, and is available in 80 languages. Designed for phones and tablets with landscape mode support.
• Completely Free & Open Source: 100% free, ad-free, and open-source (GPL v3), ensuring continued free access.

Similar to lichess.org, this app is committed to remaining free and ad-free, forever.

Source Code:

• Mobile Application: https://github.com/veloce/lichobile
• Website & Server: https://lichess.org/source

Version 8.0.0 Updates (Dec 10, 2022)

This release includes ongoing improvements, new features, and bug fixes. See the release notes for details: https://github.com/veloce/lichobile/releases