# Blackjack Trainer 101 vs 21 Trainer

The clearest difference is ratings volume: Blackjack Trainer 101 at 6.9K against 21 Trainer's 2. Blackjack Trainer 101 also leads on rating (4.8 vs 4.5) and update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Blackjack Trainer 101 sells 1 one-off in-app purchase and 21 Trainer sells 4 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Blackjack Trainer 101 holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Blackjack Trainer 101 has 6.9K ratings behind it against 2, so its average is the more settled of the two.

Blackjack Trainer 101 ships an update every 3 weeks, 21 Trainer every 2 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Blackjack Trainer 101 | 21 Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6.9K ratings)](https://appshunter.io/ios/app/blackjack-trainer-101/id348323010/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/21-trainer-blackjack-c/id6786336863/reviews) |
| Number of ratings | **6.9K** | 2 |
| Positive reviews | 92.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 17 MB | 23 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [David Richmond](https://appshunter.io/developer/329944573) | [London Technology](https://appshunter.io/developer/1611590239) |

## What reviewers say

### Blackjack Trainer 101

[App page](https://appshunter.io/ios/app/blackjack-trainer-101/id348323010)

This app is a practice tool designed to help users learn and master basic strategy for the card game Blackjack. It offers various training modes and customization options to improve decision-making in different scenarios. While it doesn't simulate a full game, it focuses on teaching optimal play.

**Highlights:** Four learning modes (random, soft, pairs, custom), Customizable house rules (decks, soft 17, doubling, surrender), Skill levels for focused practice, Interactive strategy guide, Hint button for strategic analysis, Left/right-handed layouts

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BlackJack 101 Upgrade to Pro | $2.99 | one-time |

**What reviewers like**

- 👍 Crisp and clean design
- 👍 Excellent for practicing basic strategy
- 👍 User-friendly interface
- 👍 Customizable game rules
- 👍 Helpful hints and feedback

**What reviewers complain about**

- 🐛 Some issues with basic strategy recommendations
- 🔊 Inability to adjust volume
- 🔚 Truncated hands after splitting
- 🔍 Lack of full hand history and dealer's final hand

**Reported bugs**

- Occasional crashes or performance issues
- Discrepancies in basic strategy recommendations

**Requested features**

- Option to play out split hands
- Ability to adjust volume
- Inclusion of full hand history and dealer's final hand


### 21 Trainer

[App page](https://appshunter.io/ios/app/21-trainer-blackjack-c/id6786336863)

Master blackjack strategy with this trainer. Practice realistic hands, receive instant feedback on your decisions, and improve your accuracy. Ideal for beginners and experienced players looking to sharpen their skills without real-money gambling.

**Highlights:** Learn blackjack basic strategy, Practice realistic hands, Train hit, stand, split, double, surrender, Instant feedback on decisions, Improve accuracy, Build faster decision-making

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blackjack Training PRO | $8.99 | per 7 days |
| Blackjack Training PRO | $44.99 | per year |
| Blackjack Training PRO | $89.99 | per year |
| Blackjack Training PRO | $119.99 | one-time |


## Frequently asked questions

### Is Blackjack Trainer 101 free?

Blackjack Trainer 101 is free to download, with in-app purchases available.

### Is 21 Trainer free?

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

### Which has better reviews, Blackjack Trainer 101 or 21 Trainer?

Blackjack Trainer 101 is rated higher. Blackjack Trainer 101 averages 4.8 out of 5 from 6.9K ratings, while 21 Trainer averages 4.5 from 2 ratings.

### Do Blackjack Trainer 101 or 21 Trainer have ads?

Both Blackjack Trainer 101 and 21 Trainer show ads.

### Which is updated more often, Blackjack Trainer 101 or 21 Trainer?

Blackjack Trainer 101 ships an update every 3 weeks, and 21 Trainer every 2 months. Most recently, Blackjack Trainer 101 was updated on October 27, 2026 and 21 Trainer on October 24, 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.*