# BlackJack8 vs 雑学メーカー

The clearest difference is in-app purchases: 雑学メーカー at none against BlackJack8's 1. BlackJack8's advantage is ads (none vs shown) and update cadence (every 8 days vs every 2 months). On price and device support there is nothing between them.

Both are free to download. BlackJack8 sells 1 in-app purchase, starting at $29.99 per month. 雑学メーカー asks for nothing beyond the download.

BlackJack8 ships an update every 8 days, 雑学メーカー every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | BlackJack8 | 雑学メーカー |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | Subscription | — |
| Size | 61 MB | 18 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ANYONE INC.](https://appshunter.io/developer/1577319263) | [Daisuke Ishii](https://appshunter.io/developer/1609332032) |

## 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 |


### 雑学メーカー

[App page](https://appshunter.io/ios/app/id6468896723)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BlackJack8 free?

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

### Is 雑学メーカー free?

雑学メーカー is free to download, with no in-app purchases.

### Do BlackJack8 or 雑学メーカー have ads?

雑学メーカー shows ads; BlackJack8 does not.

### Which is updated more often, BlackJack8 or 雑学メーカー?

BlackJack8 ships an update every 8 days, and 雑学メーカー every 2 months. Most recently, BlackJack8 was updated on November 3, 2026 and 雑学メーカー on November 3, 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.*