Double Down: Blackjack Trainer

Basic Strategy & Card Counting

Free · In‑App Purchases

See the expected value of every hit, stand, double, and split. Learn basic strategy for your exact table rules, then drill Hi-Lo card counting. Learn blackjack basic strategy and card counting, with the math behind each move. Play complete practice rounds and get feedback on every decision. Compare the expected value of hit, stand, double, split, and surrender, along with bust risk and win, push, and loss probabilities. Your progress measures the choices you make, so a lucky result does not count as a good decision. Set the number of decks, dealer soft-17 behavior, blackjack payout, surrender, doubling, and split rules. Save your own presets, consult a basic-strategy chart for the active rules, or build a hand in the solver. Pro unlocks Counting Lab and table themes. Main play, tutorials, and charts stay free. Counting Lab takes you from Hi-Lo card tags to running counts, full-deck countdowns, true counts, and index plays. Count opening hands across a table of up to five players. In Applied Counting, update the running count, convert it to a true count, and choose a play. Each drill states its rule assumptions and shows where you need more practice. Work through interactive lessons, take a mastery exam, or let Daily Coach choose a short review from your past mistakes. The Daily Challenge gives you a new set of decisions each day. Review weak spots in Progress and return directly to a focused drill. Challenge a friend with a hand and compare decisions after they answer. Practice offline on iPhone, iPad, and Mac. No ads or account required. This app is an educational strategy trainer: no real money is staked and no wagers are placed.

Ratings & Reviews

  • 4.9
    out of 5
    7 Ratings

- Adds support for iPhone Duo - Adds a Tools tab with the Solver, the Basic Strategy chart, and Counting Lab, each one tap away

Version 1.14

The developer, Neeraj Aggarwal, 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:

    • Identifiers
    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • VoiceOver

    • Voice Control

    • Larger Text

    • Dark Interface

    • Differentiate Without Color Alone

    • Sufficient Contrast

    • Reduced Motion

Information

Seller
Neeraj Aggarwal
Size
22.1 MB
Category
Card
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 43 more
  • English, Arabic, Bengali, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Augustus Works
  • Developer Website
  • Privacy Policy

    • Supports

    • Game Center

      Discover new games and play with friends.

    More by Neeraj Aggarwal

    You Might Also Like