21 Trainer
Blackjack Counting Coach
Only for iPhone
Free
iPhone
21 Trainer: play hands, master Hi-Lo counting, run quick drills, and track detailed stats for speed and accuracy.
21 Trainer is a focused practice app for learning blackjack fundamentals and mastering the
Hi-Lo counting system. Play hands in a clean table view, then switch to dedicated training and
quick drills to build speed and accuracy.
Features:
- Play mode to practice real decision flow hand by hand.
- Training mode for running and true count practice with optional quizzes.
- Quick Drills with adjustable duration, auto-advance pace, mid-quizzes, and a final check.
- Detailed statistics across play, training, and drills: hands played, win rate, counting
accuracy, and decision time.
- Customization for decks, themes, card styles, and quiz options.
Whether you are new to counting or polishing your skills, 21 Trainer helps you practice
deliberately and track your progress over time.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Jan Haider, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jan Haider
- Size
- 4.7 MB
- Category
- Strategy
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- Copyright
- © 2025 Jan Haider