Make Better Decisions at the Blackjack Table
Learn exactly when to Hit, Stand, Split, Double or Surrender - and why.
Blackjack 21: Strategy Trainer is your personal guide to basic strategy. It teaches you the fundamentals through real hands and instant feedback
⋄ Practice Real Blackjack Decisions
Hit, Stand, Split, Double or Surrender — train your choices on realistic hands.
⋄ Get Instant Feedback
See if your move matches basic strategy, and understand why it was right or wrong.
⋄ View the Basic Strategy Table
Access a full strategy chart that adapts to your selected house rules.
⋄ Learn to Play Like a Professional
Build confidence and make better decisions through structured practice.
⋄ No Money, No Counting, No Distractions
This is a Blackjack training app, not a game. There’s no simulated or real money, and no card counting involved.
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What Users Say
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"I finally know when to double or surrender. Love having the strategy table in my pocket."
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"This really helped me understand the game and make better decisions."
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"I use it before every casino trip – best blackjack training app out there!"
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Terms: www.bjt.app/terms-of-use
Privacy: www.bjt.app/privacy-policy
Easy to use UI, keeps it simple but really good experience.
Developer Response
Thank you, 0xmikey! We're glad the simple UI works and the experience feels great.
Isn’t very good if you are tying to learn black jack and doesn’t work very well
Sir Abraham of Salmesbury IV
This app was made for people who have played and know the rules of black jack so isn’t effective for beginners and also it doesn’t really work, with it being hard to know if I should stand or hit because of the odd ways it decides the correct action to take for the dealt hands or the player and the dealer
Soooo good
kuzssa
Perfect app. Simple to use. Knowledgable
Very positive
Poliver7171
Great app but would love to see unlimited plays for free players to really get them into the game.
Developer Response
Hi Poliver7171, we’re thrilled the app is getting you into the game! We offer a free tier to get users started, while the PRO access helps us keep the app up-to-date and regularly updated with new features. Thanks for the support!
We’ve implemented under-the-hood optimizations and visual refinements to ensure your strategy training remains smooth and precise. Good luck at the tables!
Version 3.3.0
Subscriptions
All PRO features - yearly
Enable all features and pratice modes
Free Trial
All PRO features - monthly
Enable all features and pratice mode
£7.99
The developer, BlackJack Trainer 21 Training AG, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Purchases
Identifiers
Diagnostics
Privacy practices may vary based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Provider
BlackJack Trainer 21 Training AG
Size
72 MB
Category
Casino
Compatibility
Requires iOS 16.0 or later.
iPhone Requires iOS 16.0 or later.
iPad Requires iPadOS 16.0 or later.
Mac Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
