Master blackjack with a personal coach that teaches perfect strategy and card counting. Practice on a realistic play-money table with instant feedback and personalized recommendations for improvement. No real money involved, just skill development.
1.2.0
October 14, 2026
Index plays: learn the Illustrious 18 Basic strategy assumes a neutral deck. Index plays are the hands where the true count changes the right move, like standing on 16 against a 10 or taking insurance. The new Index Plays trainer in Counting covers all 18, plus the Fab 4 surrenders: • Learn: every play in order of value, with its index • Drill: 10 plays with the index hidden, graded and saved • Fab 4: the four surrender plays, for tables with late surrender Indices follow your house rules, including games where the dealer hits soft 17. A clear path for card counting Counting now opens on a six-step path: learn the Hi-Lo values, tag the cards, keep the running count, convert to the true count, bet with the count, then index plays. Your progress so far is already filled in. A better start New to blackjack? Play your first three hands with the coach beside you. Already know basic strategy? Take the 3-hand challenge and see where the chart and the count disagree. Also in this update • The Coach's Deviations lesson is rewritten and links straight to the drill • Home suggests index plays once you're betting with the count • Coach lessons opened from another tab now take you back there • Tag the cards: the table and buttons stay put when the answer appears
More$9.99
21 Academy Pro
Advanced strategy, analytics, session history, and more
No, Coach 21 is ad-free, allowing for an uninterrupted learning experience.
Coach 21 is free to learn with. The Pro version, which unlocks advanced features like full session history and analytics, is available as a one-time purchase. A 3-day Full Access Pass is also offered.
Coach 21 teaches perfect basic strategy, providing instant feedback on the correct move (hit, stand, double, or split) for every hand.
Yes, Coach 21 allows you to learn the Hi-Lo card counting system step-by-step and train your speed and accuracy with timed drills.
Yes, Coach 21 is designed to meet users where they are, whether they are learning the game or drilling for flawless play, with structured lessons and clear explanations.
Coach 21 is currently supported on iPhone devices.
The latest version, 1.1.1, was released on September 4, 2026, indicating recent development activity.
Coach 21 has an age rating of 17+, likely due to its casino game simulation nature.
