Dojo 21

Blackjack Strategy Trainer

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Dojo 21 is a blackjack strategy trainer — not a gambling app. Practice basic strategy with simulated hands and track your accuracy over time. No real money. No wagering. No casino. Learn the mathematically optimal play for every hand scenario through repetition and instant feedback. Dojo 21 tracks your decisions, highlights mistakes, and helps you build muscle memory for the blackjack table. TRAIN LIKE A PRO Every hand shows you the correct basic strategy decision — hit, stand, double down, or split. Get real-time feedback so you learn from mistakes as you go. TRACK YOUR PROGRESS - Accuracy percentage across all sessions - Lifetime stats and readiness score - Session summaries with detailed breakdowns - Milestone achievements to mark your improvement REALISTIC TABLE SETTINGS Choose from multiple table configurations with different rule sets — dealer hits or stands on soft 17, blackjack payout ratios, and more. Practice under the conditions you'll actually face. BUILT-IN REFERENCE Pull up the full basic strategy cheat sheet anytime. Educational panels explain the "why" behind every play, so you're not just memorizing — you're understanding. FEATURES - Full basic strategy training for hard, soft, and pair hands - Real-time feedback on every decision - Multiple table configurations with different house rules - Session summaries with accuracy breakdowns - Lifetime stats and readiness score tracking - Milestone achievements to mark your progress - Built-in strategy cheat sheet - Educational panels explaining the math behind each play Whether you're a complete beginner learning the basics or an experienced player sharpening your edge before your next trip, Dojo 21 gives you the reps to play with confidence.

Ratings & Reviews

  • 5.0
    out of 5
    2 Ratings

- New milestones strip on the home screen — see every achievement at a glance and tap to jump straight to the milestones page - Your current perfect-call streak now shows on the home screen so you know what's on the line before you sit down - Reaching 21 now automatically ends your turn — no more pointless prompts on a perfect total, including across split hands - Card animations are smoother and faster, and no longer race or overlap each other - Fixed the dealer's hole card flip showing the card front on both sides instead of revealing from the back - Playing Dojo 21 no longer interrupts your music — Spotify, Apple Music, and podcasts keep playing, and the win sound (when enabled) layers on top instead of taking over - The win celebration sound is now off by default and can be toggled in Settings - The end-of-session review button now reads "Done" instead of "New Session" - Now requires iOS 26.3 for better performance and reliability

Version 1.1

The developer, Vincent Dondain, 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:

    • Usage Data
    • Other Data

Privacy practices may vary, for example, based 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

Seller
  • Vincent Dondain
Size
  • 7.2 MB
Category
  • Casino
Compatibility
Requires iOS 26.3 or later.
  • iPhone
    Requires iOS 26.3 or later.
  • Mac
    Requires macOS 26.3 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 26.3 or later.
Languages
  • English
Age Rating
4+
Copyright
  • © Vincent Dondain
  • Privacy Policy