# BlackJack8 vs Spatial Disk

The clearest difference is in-app purchases: Spatial Disk at none against BlackJack8's 1. BlackJack8's advantage is update cadence (every 8 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BlackJack8 sells 1 in-app purchase, starting at $29.99 per month. Spatial Disk asks for nothing beyond the download.

BlackJack8 ships an update every 8 days, Spatial Disk every 2 months. The most recent releases landed on October 15, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | BlackJack8 | Spatial Disk |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | Subscription | — |
| Size | 61 MB | 152 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ANYONE INC.](https://appshunter.io/developer/1577319263) | [Gugenka Inc.](https://appshunter.io/developer/410262135) |

## What reviewers say

### BlackJack8

[App page](https://appshunter.io/ios/app/blackjack8/id1577319261)

Learn and master card counting strategies for blackjack. This app offers three distinct counting systems and data analysis tools to help you predict remaining cards and optimize your gameplay. It's designed for both beginners and advanced players seeking to improve their decision-making at the table.

**Highlights:** Card counting strategy training, Three counting systems (Hi-Lo, Hi Opt II, Zen), Data analysis for decision making, Predict remaining cards, EXP (expected value) calculation, Beginner and advanced modes

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription(1 month) | $29.99 | per month |


### Spatial Disk

[App page](https://appshunter.io/ios/app/spatial-disk/id6748513818)

**In-app purchases:** none


## Frequently asked questions

### Is BlackJack8 free?

BlackJack8 is free to download, with in-app purchases available.

### Is Spatial Disk free?

Spatial Disk is free to download, with no in-app purchases.

### Do BlackJack8 or Spatial Disk have ads?

Neither BlackJack8 nor Spatial Disk shows ads.

### Which is updated more often, BlackJack8 or Spatial Disk?

BlackJack8 ships an update every 8 days, and Spatial Disk every 2 months. Most recently, BlackJack8 was updated on October 15, 2026 and Spatial Disk on October 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*