# Blackjack vs Coach 21

The clearest difference is review sentiment: Coach 21 at 100% against Blackjack's 67%. Coach 21 also leads on update cadence (daily vs fortnightly) and rating (4.9 vs 4.5). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Blackjack sells 3 in-app purchases, starting at $1.99 per 7 days and Coach 21 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Coach 21 holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 13 and 8 respectively. Written reviews point the same way: 67% of Blackjack's written reviews are positive against 100% of Coach 21's.

Blackjack ships an update fortnightly, Coach 21 daily. The most recent releases landed on October 28, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Blackjack | Coach 21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (13 ratings)](https://appshunter.io/ios/app/blackjack-learn-practice/id6757376628/reviews) | **[4.9 (8 ratings)](https://appshunter.io/ios/app/coach-21-blackjack-trainer/id6788065414/reviews)** |
| Number of ratings | **13** | 8 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 27 MB | 40 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Robin Kanatzar](https://appshunter.io/developer/1209848116) | [Wally Apps LLC](https://appshunter.io/developer/1892495848) |

## What reviewers say

### Blackjack

[App page](https://appshunter.io/ios/app/blackjack-learn-practice/id6757376628)

Master blackjack strategy and card counting with progressive lessons and real-time feedback. Learn to calculate house edge and make mathematically correct plays to beat the dealer.

**Highlights:** 18 progressive strategy lessons, Full Hi-Lo card counting course, EV calculator for house edge analysis, Real-time feedback on every hand, Realistic casino gameplay simulation, Detailed progress tracking

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $1.99 | per 7 days |
| Pro Monthly | $3.99 | per month |
| Pro | $12.99 | per year |


### Coach 21

[App page](https://appshunter.io/ios/app/coach-21-blackjack-trainer/id6788065414)

Master blackjack with a personal coach that teaches perfect strategy and card counting. Practice on a realistic play-money table with instant feedback and personalized recommendations for improvement. No real money involved, just skill development.

**Highlights:** Perfect basic strategy training, Card counting (Hi-Lo system) drills, Realistic play-money blackjack simulator, Personalized practice recommendations, Session grading and post-game analysis, Configurable house rules

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 21 Academy Pro | $9.99 | one-time |


## Frequently asked questions

### Is Blackjack free?

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

### Is Coach 21 free?

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

### Which has better reviews, Blackjack or Coach 21?

Coach 21 is rated higher. Blackjack averages 4.5 out of 5 from 13 ratings, while Coach 21 averages 4.9 from 8 ratings.

### Do Blackjack or Coach 21 have ads?

Neither Blackjack nor Coach 21 shows ads.

### Which is updated more often, Blackjack or Coach 21?

Blackjack ships an update fortnightly, and Coach 21 daily. Most recently, Blackjack was updated on October 28, 2026 and Coach 21 on October 23, 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.*