# Advanced 21 Blackjack vs Card Adder 21

The clearest difference is update cadence: Card Adder 21 at every 5 days against Advanced 21 Blackjack's every 3 months. Card Adder 21 also leads on rating (5.0 vs 4.6) and monetization model (free vs free with in-app purchases). Advanced 21 Blackjack's advantage is ratings volume (214 vs 1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Advanced 21 Blackjack sells 10 one-off in-app purchases and Card Adder 21 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Card Adder 21 holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Advanced 21 Blackjack has 214 ratings behind it against 1, so its average is the more settled of the two.

Advanced 21 Blackjack ships an update every 3 months, Card Adder 21 every 5 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Advanced 21 Blackjack | Card Adder 21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (214 ratings)](https://appshunter.io/ios/app/advanced-21-blackjack/id1464607988/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/card-adder-21/id6748666396/reviews)** |
| Number of ratings | **214** | 1 |
| Positive reviews | 84.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 180 MB | 79 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Basement Software LLC](https://appshunter.io/developer/1129980381) | [Dot Business Integrated Solutions](https://appshunter.io/developer/1808206089) |

## What reviewers say

### Advanced 21 Blackjack

[App page](https://appshunter.io/ios/app/advanced-21-blackjack/id1464607988)

Experience a realistic blackjack simulation with extensive customization options. Practice strategies, build skills, and unlock new graphics as you advance through tables. This free game offers thousands of hours of strategic play and fun.

**Highlights:** Customizable table rules, Adjustable deck shoe size, Multiple seat positions, Strategy suggestions, Table advancement system, Unlockable graphics, Simulated casino environment

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dogs Card Backs | $1.99 | one-time |
| Flowers Card Backs | $1.99 | one-time |
| Pile of Club Points | $1.99 | one-time |
| Space Theme | $4.99 | one-time |
| Ocean Theme | $4.99 | one-time |
| Bag of Club Points | $4.99 | one-time |
| Small Box of Club Points | $9.99 | one-time |
| Box of Club Points | $24.99 | one-time |
| Big Box of Club Points | $49.99 | one-time |
| Huge Box of Club Points | $99.99 | one-time |

**What reviewers like**

- 👍 No ads or minimal ads
- 🎮 Realistic and immersive gameplay
- 📚 Great learning tool for beginners
- ⚙️ Customizable game settings
- 🎯 Helpful strategy guides and tips

**What reviewers complain about**

- 🎰 Perceived rigging at higher bet levels
- 📊 Inconsistent card distribution patterns
- 🔌 Requires network connection (no offline mode)
- 💰 Encourages chip purchases after losses
- 🚫 Forced usage statistics acceptance

**Reported bugs**

- Reset function does not work
- Persistent bug causing dealer to pull excessive 5-6 card 21s
- Chip purchase prompts after significant losses

**Requested features**

- Card counting practice mode
- Offline/airplane mode support
- Max bet button for convenience
- Vegas game variations (free bet, side bets)
- Higher chip rewards after going broke


### Card Adder 21

[App page](https://appshunter.io/ios/app/card-adder-21/id6748666396)

Enhance your mental math skills by tracking a running total as cards are dealt. Progress through increasingly challenging levels with a timed element. The game offers progress tracking and is designed to make counting enjoyable.

**Highlights:** Progressive difficulty levels, Timed challenges, Running total tracking, Progress tracking, Card dealing gameplay

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Card Adder 21 Pro Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is Advanced 21 Blackjack free?

Advanced 21 Blackjack is free to download, with in-app purchases available.

### Is Card Adder 21 free?

Card Adder 21 is free to download, with in-app purchases available.

### Which has better reviews, Advanced 21 Blackjack or Card Adder 21?

Card Adder 21 is rated higher. Advanced 21 Blackjack averages 4.6 out of 5 from 214 ratings, while Card Adder 21 averages 5.0 from 1 ratings.

### Do Advanced 21 Blackjack or Card Adder 21 have ads?

Neither Advanced 21 Blackjack nor Card Adder 21 shows ads.

### Which is updated more often, Advanced 21 Blackjack or Card Adder 21?

Advanced 21 Blackjack ships an update every 3 months, and Card Adder 21 every 5 days. Most recently, Advanced 21 Blackjack was updated on October 24, 2026 and Card Adder 21 on October 9, 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.*