Blackjack · Hi-Lo
Learn to count cards
Short lessons, ten-minute drills and a blackjack table where a coach keeps the count with you. You practise until counting becomes automatic.
- Free
- No ads
- No account
- Offline
- 8 languages
The method
One number to keep.
The Hi-Lo system gives every card a value. You add them up as the cards come out: when the count climbs, the shoe is rich in high cards and the edge moves to your side.
+1
Low cards · 2–6
0
Neutral · 7–9
−1
High cards · 10–A
Example: 5, K, 3, 9, A give +1 −1 +1 0 −1, a running count of 0.
The path
From the first lesson to a real table.
- 01Learn
Eleven lessons, step by step
From what counting is to the Illustrious 18, through basic strategy, the true count and bankroll management.
- 02Train
Ten minutes a day
Card values, basic strategy, speed drill, reading cards in groups, true count conversion. Every drill keeps your records.
- 03Play
A coach that follows the count
A full blackjack table with bets and chips. The coach stays hidden until you open it, and the table flags your mistakes.
- 04Progress
Know exactly where you stand
A table-readiness score out of 100, five skills measured and the drill that will help you most.
Nothing leaves your phone
No account, no tracking. Your progress stays on the device.
Offline
No connection needed, on the train or on holiday.
Every mistake explained
The right play, and why, for every hand you get wrong.
8 languages
English, French, German, Dutch, Spanish, Italian, Portuguese and Japanese.
Why Deckard
Card counting at blackjack always intrigued me: the method, and above all how effective it really is. I wanted to take it on properly, to practice the exercise myself, and then to turn it into an app. I did not know of any app dedicated to this specific practice. So I set out to build something simple, direct and accessible to everyone, that gives the training and the mental practice needed to genuinely acquire the skill.
FAQ
Frequently asked questions
Is card counting legal?
Yes. You use your head, not a device. A casino can ask you to stop playing, but counting is not cheating.
Do I need to be good at math?
No. It comes down to keeping one number that goes up or down by one, then dividing it by the decks left.
Does Deckard use real money?
No. The balance and chips at the table are play money. No real winnings or losses are possible.
How long does it take to learn?
The practice lesson lays out a plan of about eight weeks from zero: basic strategy first, then Hi-Lo, the true count, practice in realistic conditions and finally the Illustrious 18.
Which counting system does it use?
Hi-Lo by default, the most widely used. KO and Omega II are also available in Settings.
Is my data sent anywhere?
No. No account, no ads, no tracking. Your progress stays on your phone.