A native app for Ranked Sudoku is on the roadmap — no timeline to share yet, but it's a real plan. Until it lands, you can already install the web app itself: its own icon, its own window, no browser address bar, opening straight into the game.
On Android and desktop Chrome or Edge, that button installs it directly. On iOS, Safari doesn't offer an install button to any website — open the share menu and choose "Add to Home Screen" instead, which gets you the same standalone icon and window.
It's not the native app — an App Store listing and deeper OS integration are still native-only — but it's the closest thing available right now, and it's already live. We'll post again once there's something concrete to share about the native app itself.