The desktop pc browser version of lichess is perfect. The experience there would easily be 4 stars. The problem is the mobile app isn't good. I've lost 2 games tonight on time (I would have lost anyway even without this problem, but still) because I move my piece on my screen but the server doesn't register the move on time so it undoes the move that on my screen was clearly played in time. It's extremely frustrating. The mobile version isn't good. Stick to desktop.