# KO Blackjack Card Counting — Trainer & Practice App

> Blackjack card counting trainer and practice simulator with customizable strategies. (iPhone/iPad app by Double Down Software.)

- Source: https://appshunter.io/ios/app/ko-blackjack-card-counting/id6740313885 (this page in markdown: same URL + `.md`)
- Developer: [Double Down Software](https://appshunter.io/developer/1751632262)
- Category: Games, Card, Casino
- Price: $14.99
- Rating: 3.80/5 from 4 App Store ratings · 2 written reviews indexed
- Age rating: 12+
- Requires: iOS 16.0 · 39 MB
- Languages: American English
- Released: 2025-01-09
- Data updated: 2026-08-26
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/ko-blackjack-card-counting/id6740313885/reviews.md

## What is KO Blackjack Card Counting?

Designed as a serious practice tool for novices and pros, and playable as a Blackjack game. Supports unbalanced (no true count) strategies like KO, OK, and reKO.

Includes 11 training modules: table game, 1 basic strategy drill, 2 deviation drills, 3 running count drills, chart review, chart quiz, test out, and simulator.

Supported Strategies: Presets for KO, OK, reKO. Configure the card count values (tags), insurance indexes, initial running count (1 to 8 decks), betting ramp (-7 to +8 running count), chart indexes. Separate charts for hard 17 and soft 17. Charts are 100% editable. Preset for 6 deck game. Modify however you'd like for any deck size.

*** Module Details ***

+ Basic Strategy Flashcard Drill. Select the correct action for the dealt hand. Settings: Deals hits soft 17, Surrender, Double after split, Pair hands, Soft hands, Hard hands, Deal 2, 3, and 4 card hands, Feedback for mistakes only, Hide Gauges (accuracy and speed).

+ Running Count Drills. Three drills. Count the cards dealt to you in various ways. Settings: Initial Running Count, Deal Speed, Number of Cards, Deal in Pairs, Number of Stacks, Orientation, Number of Seats, Bot Ghost Hand, Ask for running count interval.

+ Deviation Flashcard Drills. Two drills. Choose the right deviation for the cards dealt, and pick the right action given a true count. Settings: Deals hits soft 17, Surrender, Pair hands, Soft hands, Hard hands, 2-3-4 card hands, Feedback for mistakes only.

+ Charts Review and Edit. View charts for basic strategy and deviations. Edit any value in the chart. Two sets of charts for dealer stands or hits soft 17. Separate charts for pairs, hard hands, soft hands, and surrender.

+ Charts Quiz. Fill-in-the-blank quizzes for all charts.

+ Table Game. Perfect your skills at the table. Feedback on mistakes. Simulates a real Blackjack game. Assign one up to seven spots to yourself or the computer. Dealer speed is adjustable. Settings include: Vertical/Horizontal Orientation, Spot Assignments, Ghost Hand, Show Discard Tray, Dealer Hits Soft 17, Surrender, Double After Split, Resplitting Aces, ENHC, Number of Decks, Penetration, Notify on Mistake, Use Deviations, Ask for true count interval, Positive Count Bias, Place Bets, Deal Speed.

+ Simulator. Run up to 25,000 hands per second (iPhone 15). Analyze performance of different strategies, table rules, player level, etc. Stats on gains, hourly rate, edge, risk of ruin, and much more.

+ Test out: Reports your accuracy and mistakes at the end of the last shoe. Tests basic strategy, deviations, betting, insurance, and counting. Settings: Dealer hits soft 17, Surrender, Double After Split, Resplitting Aces, ENHC, Number of Decks, Penetration, Number of Shoes, Use Deviations, Deal Speed.

## Key features

- Multiple training modules
- Supports KO, OK, reKO strategies
- Customizable card count values
- Editable strategy charts
- Basic strategy drills
- Running count drills
- Deviation drills
- Table game simulation

## Chart rankings

- #124 in Top Paid · Casino (US App Store)

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/ko-blackjack-card-counting/id6740313885/reviews.md

### 5/5 — It’s worth it

*2025-08-20*

Some guy gave it 2 stars because there is no manual…. You should at least know what the knock out strategy is before getting this app. I think it’s well done. You can adjust card speeds and it really forces you to practice basic strategy and keep the count. It’s well worth the price if you want to because an AP I think it’s a great tool.

### 1/5 — KO blacjack

*2025-04-28*

Where is the manual?

## Frequently asked questions about KO Blackjack Card Counting

### What Blackjack strategies does KO Blackjack Card Counting support?

KO Blackjack Card Counting supports unbalanced strategies like KO, OK, and reKO. You can configure card count values, insurance indexes, and betting ramps for up to 8 decks.

### How many training modules are available in KO Blackjack Card Counting?

The app offers 11 training modules, including table game practice, basic strategy drills, deviation drills, running count drills, chart review, chart quiz, and a simulator.

### Can I customize the strategy charts in KO Blackjack Card Counting?

Yes, all charts in KO Blackjack Card Counting are 100% editable. You can modify values for basic strategy and deviations, with separate charts for different dealer rules and hand types.

### What kind of feedback does the table game module provide?

The table game module simulates a real Blackjack game and provides feedback on mistakes. You can adjust dealer speed, number of decks, penetration, and choose whether to use deviations.

### How fast is the simulator in KO Blackjack Card Counting?

The simulator can run up to 25,000 hands per second on an iPhone 15, allowing for rapid analysis of strategy performance and risk of ruin.

### What devices does KO Blackjack Card Counting support?

KO Blackjack Card Counting is available for iPhone and iPad devices.

### What is the age rating for KO Blackjack Card Counting?

KO Blackjack Card Counting has an age rating of 12+, making it suitable for teens and older.

### How often is KO Blackjack Card Counting updated?

The app was last updated on March 6, 2025, indicating recent development and support.

## Version history (last 3 releases)

### 1.2 — 2025-03-06

+ Test Out Drill improvements and bug fixes
+  Minor bug fixes

### 1.1 — 2025-03-03

+ Bet ramp RC adjustment for unbalanced strategy
+ Minor UI improvements

### 1.0 — 2025-01-09

No release notes.

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## More apps by Double Down Software

- [Blackjack Hi-Lo Card Counting](https://appshunter.io/ios/app/blackjack-hi-lo-card-counting/id1621861617)
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- [Blackjack - Flashcard Drills](https://appshunter.io/ios/app/blackjack-flashcard-drills/id6477726327)
- [Blackjack 21 - Basic Strategy](https://appshunter.io/ios/app/blackjack-21-basic-strategy/id6477749240)
- [Blackjack - Simulator](https://appshunter.io/ios/app/blackjack-simulator/id6505077422)
- [Blackjack Card Counting Pro](https://appshunter.io/ios/app/blackjack-card-counting-pro/id6505133534)

All apps by Double Down Software: https://appshunter.io/developer/1751632262

## Related topics

[double down software](https://appshunter.io/ios/topics/double-down-software)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*