
About
Master blackjack strategy and card counting with progressive lessons and real-time feedback. Learn to calculate house edge and make mathematically correct plays to beat the dealer.
What's New in Blackjack
1.4.9
July 14, 2026
Bug fix: Pairs
Subscription plans
Pro Monthly
Access app features
User reviews
Developer apps
FAQ
What is the learning methodology of Blackjack Trainer 21?
Blackjack Trainer 21 uses a structured, progressive curriculum with 18 lessons. It starts with basic strategy and advances to complex card counting techniques and deviations, requiring 90% accuracy to progress.
How does Blackjack Trainer 21 track user progress?
The app provides detailed progress tracking, including per-lesson accuracy percentages, rolling 50-hand performance statistics, lifetime stats by hand type, and visual progress bars to show improvement.
Does Blackjack Trainer 21 offer offline play?
Yes, Blackjack Trainer 21 works offline, allowing users to train their blackjack skills and card counting abilities without an internet connection.
What are the subscription options for Blackjack Trainer 21?
Some advanced features, such as the Illustrious 18 deviations and the EV calculator, require a PRO subscription. The app is free to download and use for basic training.
Is Blackjack Trainer 21 suitable for beginners?
Yes, the app is designed to turn beginners into confident, skilled players through its structured training system, starting with fundamental strategies and progressing to advanced techniques.
What is the age rating for Blackjack Trainer 21?
Blackjack Trainer 21 has an age rating of 4+, making it suitable for a wide range of users interested in learning blackjack strategy.
How often is Blackjack Trainer 21 updated?
The latest version is 1.4.5, and the app was last updated on March 13, 2026. This indicates a commitment to ongoing development and improvements.
What devices does Blackjack Trainer 21 support?
Blackjack Trainer 21 is currently supported on iPhones, with a small download size of 7.5 MB, ensuring it runs efficiently on compatible devices.





