CountSharp app icon

Count sharper.
Play smarter.

The complete blackjack card counting trainer. Track the count, learn basic strategy, master index plays and size your bets, all in one app.

Download on the App Store

iPhone · iPad · Mac · Apple Watch

Basic strategy chart
Basic strategy
Count tracker showing running count and true count
Real-time count
Index plays and deviations
Index plays
Training drills menu
Training drills

Everything a serious counter needs

Real-time count tracking

Tap cards as they're dealt and see the running count and true count update instantly, with a clear signal when the count turns in your favour.

9 counting systems

Hi-Lo, Hi-Opt I, Hi-Opt II, Omega II, Zen Count, Wong Halves, KO, Red 7 and Ace-Five. Start simple and step up when you're ready.

Basic strategy charts

Complete basic strategy for hard totals, soft totals and pairs, generated for your exact table rules and colour-coded for instant recall.

Index plays and deviations

The Illustrious 18 and Fab 4 surrenders built in, with the plays that apply at the current true count highlighted for you.

Bet spread guidance

See how many units to bet at every true count, with edge estimates and Kelly Criterion sizing.

Training drills

Four drills to build speed and accuracy: speed counting, basic strategy, deviations and true count conversion. Your results are saved so you can track progress.

Bankroll management

Work out risk of ruin, recommended bankroll and an optimal bet ramp, and use the variance simulator to see the swings to expect.

Session logging

Record each session's result, duration, table conditions and notes, and follow your total result and units per hour.

Your table, your rules

Set decks, soft 17, doubling, splitting, surrender, blackjack payout and penetration. Strategy and deviations update to match.

Apple Watch

Count from your wrist and look up basic strategy with the Digital Crown. The free companion app stays in sync with your iPhone.

Siri and Shortcuts

Ask "What's the count in CountSharp?", add cards or check the right play hands-free. Every action also works in Shortcuts and with Apple Intelligence.

Accessible to everyone

Full VoiceOver support, with the count announced as you deal, plus larger text, Voice Control and Reduce Motion.

Made for iPhone, iPad and Mac

One app for every screen. On iPad and Mac, the big display gives the strategy charts, deviations and bankroll tools room to breathe.

CountSharp basic strategy chart on iPad

On your wrist

CountSharp for Apple Watch is included free with the iPhone app. Tap cards as they're dealt, watch the true count, and check basic strategy without reaching for your phone.

CountSharp on Apple Watch showing a true count of plus 4.3 and buttons for every card

Private by design

No account, no internet connection, no tracking. Everything you enter stays on your devices. Read the privacy policy.