Whist - Expert AI, developed by NeuralPlay LLC, is a free card game app available on Android. This app is perfect for those who want to learn Whist or challenge themselves against an expert AI. The AI provides suggested plays for beginners to learn while experienced players can choose from six levels of AI play.

Whist - Expert AI offers customizations to the rules of the game, including determining trump by the dealer's last card (Classic Whist), alternate suits, or alternate suits with notrump. The app also allows for the awarding of honors points to a team with three or four of the top four honors in the trump suit.

In addition to the features mentioned above, Whist - Expert AI offers undo, hints, and the ability to review the play of the hand trick by trick. Players can claim the remaining tricks when their hand is high and let the computer check their play throughout the game and point out differences. The app also allows for the replay and skipping of hands, detailed statistics, achievements, leaderboard, and offline play. Overall, Whist - Expert AI is a comprehensive Whist game app that caters to players of all levels.