---
title: "KO Blackjack Card Counting — App Overview"
url: https://marlvel.ai/apps/ko-blackjack-card-counting
category: Games
developer: Double Down Software
platforms: ios, android
rating: 4.0 (33 ratings)
pricing: free
report_level: overview
generated: 2026-04-30
last_verified: "2026-04-30T11:08:53.249Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app functions as a comprehensive, highly configurable technical training suite for players practicing unbalanced blackjack card counting systems.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Games |
| Rating | 4.0 ★ (33) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 1.2 |
| Latest Version (Android) | 3.0 |
| Developer | Double Down Software |

<!-- SECTION: Summary -->
## What is KO Blackjack Card Counting?

KO Blackjack Card Counting is a specialized training tool designed for blackjack players to master unbalanced card counting strategies like KO, OK, and reKO. It features 11 distinct training modules, including drills for basic strategy, running counts, and customizable chart reviews to simulate real-world table conditions.

<!-- SECTION: Key Features -->
## Key Features

- **Training Modules**: Includes 11 specialized modules covering basic strategy, running counts, chart quizzes, and a simulator.
- **Strategy Customization**: Allows users to configure card tags, insurance indexes, betting ramps, and fully editable strategy charts.
- **Basic Strategy Drill**: A flashcard-style drill that supports various game rules like soft 17, surrender, and double after split.
- **Flexible Game Settings**: Supports adjustable deck sizes from 1 to 8 decks with configurable running count parameters.

<!-- SECTION: Target Audience -->
## Who is it for?

Serious blackjack players and novices looking to practice and refine card counting techniques.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/ko-blackjack-card-counting/id6740313885?uo=4)
- [Google Play](https://play.google.com/store/apps/details?id=com.cc.blackjack&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/apps/ko-blackjack-card-counting)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/ko-blackjack-card-counting).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*