# BJA Blackjack Trainer vs Blackjack Mastery 21 Trainer

The clearest difference is ads: BJA Blackjack Trainer at none against Blackjack Mastery 21 Trainer's shown. Blackjack Mastery 21 Trainer's advantage is update cadence (every 3 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. BJA Blackjack Trainer sells 2 one-off in-app purchases and Blackjack Mastery 21 Trainer sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

BJA Blackjack Trainer ships an update every 2 months, Blackjack Mastery 21 Trainer every 3 weeks. The most recent releases landed on November 6, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | BJA Blackjack Trainer | Blackjack Mastery 21 Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (860 ratings)](https://appshunter.io/ios/app/bja-blackjack-trainer/id582187547/reviews)** | — |
| Number of ratings | **860** | — |
| Positive reviews | 70.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 44 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Dealer Bust Time LLC](https://appshunter.io/developer/1796009998) | [Anton Terekhov](https://appshunter.io/developer/1778000768) |

## What reviewers say

### BJA Blackjack Trainer

[App page](https://appshunter.io/ios/app/bja-blackjack-trainer/id582187547)

Master blackjack strategy and card counting with this trainer app. Learn basic strategy, practice real hand signals, and improve your game to gain an advantage over the house. Ideal for aspiring professional players.

**Highlights:** Basic Strategy training, Real hand signal practice, Running count tracking, Basic Strategy mistake guidance, Learn HiLo card counting (upgrade), Variable betting practice (upgrade)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Card Counting Drill | $0.99 | one-time |
| Go Pro | $2.99 | one-time |

**What reviewers like**

- 👍 Good training app
- 🚀 Helpful for learning basic strategy
- 🚀 Effective for practicing card counting
- 💡 Provides instant feedback on mistakes
- 💡 Allows adjusting dealer speed

**What reviewers complain about**

- 🐛 Crashes or freezes occasionally
- 🐛 Issues with counting drills and entering negative counts
- 🐛 Dealer hand behavior not realistic
- 💡 Needs more customization options (e.g. casino rules, betting)
- 💡 Gestures for playing actions could be improved

**Reported bugs**

- App crashes when switching between game and website
- Counting drill not accepting certain negative counts
- Dealer hand logic issues (e.g. hitting soft 18)

**Requested features**

- Add option to review previous hands
- Improve counting drill functionality
- Provide more casino rule variations
- Add buttons instead of relying on gestures
- Display win/loss statistics and betting performance


### Blackjack Mastery 21 Trainer

[App page](https://appshunter.io/ios/app/blackjack-mastery-21-trainer/id6744902920)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $9.99 | per month |
| Premium Access | $39.99 | per year |
| Premium Access | $39.99 | per year |
| Premium Access | $99.99 | one-time |


## Frequently asked questions

### Is BJA Blackjack Trainer free?

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

### Is Blackjack Mastery 21 Trainer free?

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

### Do BJA Blackjack Trainer or Blackjack Mastery 21 Trainer have ads?

Blackjack Mastery 21 Trainer shows ads; BJA Blackjack Trainer does not.

### Which is updated more often, BJA Blackjack Trainer or Blackjack Mastery 21 Trainer?

BJA Blackjack Trainer ships an update every 2 months, and Blackjack Mastery 21 Trainer every 3 weeks. Most recently, BJA Blackjack Trainer was updated on November 6, 2026 and Blackjack Mastery 21 Trainer on October 28, 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.*