Blackjack Trainer: 21 Coach

Perfect your basic strategy and master card counting. Blackjack Trainer grades every decision, explains it in plain English and drills the spots you miss most.

Every recommendation in this app is basic strategy: the provably optimal play for every hand, verified against a reference expected-value engine, not gut feel or folklore. Play practice hands at a first-person table with a dealer, get instant feedback the moment you act, and learn exactly why a play is right or wrong in plain English.

WHY BASIC STRATEGY
Basic strategy is the set of mathematically optimal decisions for every blackjack hand, worked out through exhaustive computer analysis of the game's probabilities. Playing it perfectly can't guarantee any single hand, but it is the mathematically strongest way to play. This app helps that strategy become second nature through repetition and clear explanations.

RULE-AWARE, NOT ONE-SIZE-FITS-ALL
Correct blackjack strategy changes with the table rules, and this app adapts to match:
- Dealer hits or stands on soft 17 (H17 / S17)
- 1, 2, 4, 6, or 8 deck shoes
- Late surrender offered or not

Change any of these in Settings and every recommendation updates to match. The charts assume double after split is allowed.

LEARN BY PLAYING
- A living practice table with a dealer and a real deck of cards
- Instant feedback after every decision, with a plain-English explanation of why a play is correct or incorrect
- Short "Remember" mnemonic cards that reinforce the pattern behind a decision, not just the answer
- A full basic strategy Chart tab you can flip through any time, color-coded and organized by hard totals, soft totals, and pairs
- A Learn tab with lessons and drill packs targeted at your weakest spots, built from your own mistakes and lowest-mastery cells
- A Progress tab with an accuracy ring, a trend sparkline, a mastery heatmap across every hand and dealer upcard, and streak tracking

BUILD A HABIT
- Daily: ten hands, the same for everyone, one attempt a day
- A day streak that allows one rest day a week
- A 14-day path through every lesson and drill pack
- Your trickiest hand deals first when you return
- Optional reminders, off until you turn them on
- Share cards for your streak and progress

CARD COUNTING AND SPEED MATH
The Count tab trains the Hi-Lo running count and the true count on cards the app deals, with three drills: card by card, a timed deck countdown, and true count conversion. It is skill practice, like a chess tactics trainer, with no way to enter cards from a real table. Speed Math builds quick mental arithmetic: add up a hand before the timer runs out.

EDUCATION, NOT GAMBLING
This is a study tool, not a gambling app. There is no real money and no virtual currency. There are no chips, no bets, no bankroll, and no payouts: nothing is staked, and nothing is won or lost. You practice decisions and the app grades them, exactly the way a chess tactics trainer grades moves.

PRIVATE BY DESIGN
Practice works offline. There's no account and no sign-up. Your progress is stored only on your device. Only an optional Pro purchase goes online, confirmed through Apple and RevenueCat under a random anonymous ID, never your name or email. There are no ads, no analytics, and no third-party tracking of any kind.

BLACKJACK TRAINER PRO
Every lesson, the strategy chart, the counting drills and the Daily challenge come with the app, along with 10 practice hands a day. Blackjack Trainer Pro adds unlimited practice and the advanced study tools: index plays (the Illustrious 18 and Fab 4), Shoe Lab, decision math and the Daily archive. Pro comes as a yearly plan or a Lifetime unlock. The yearly plan renews automatically until you cancel it in your Apple Account settings.

Terms of Use: https://blackjack-trainer-coach.vercel.app/terms.html
Privacy Policy: https://blackjack-trainer-coach.vercel.app/privacy.html

Blackjack Trainer turns basic strategy from a chart you memorize into a skill you actually build.