Chess.com

The most name-searched chess platform worldwide — play, learn, puzzles — running the same board in the browser as the native app. Worth knowing before this goes live: the manifest sets prefer_related_applications, which can lead Chrome to nudge toward the native app instead of prompting to install this one — the browser version still works and "Add to Home Screen" from the menu still installs it, it just may not surface as a banner. Open chess.com and add it to the home screen from the browser menu.