# Perfect Blackjack Trainer vs Basis21

The clearest difference is update cadence: Basis21 at every 2 days against Perfect Blackjack Trainer's every 2 months. Basis21 also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Perfect Blackjack Trainer sells 1 one-off in-app purchase and Basis21 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Perfect Blackjack Trainer ships an update every 2 months, Basis21 every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Perfect Blackjack Trainer | Basis21 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 8 MB | 14 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Michael Bridges](https://appshunter.io/developer/1818640701) | [VINCENT WAH KIT WONG](https://appshunter.io/developer/6782601296) |

## What reviewers say

### Perfect Blackjack Trainer

[App page](https://appshunter.io/ios/app/perfect-blackjack-trainer/id6752608377)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blackjack Practice Premium | $4.99 | one-time |


### Basis21

[App page](https://appshunter.io/ios/app/basis21-blackjack-trainer/id6787679130)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $19.99 | one-time |


## Frequently asked questions

### Is Perfect Blackjack Trainer free?

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

### Is Basis21 free?

Basis21 is free to download, with in-app purchases available.

### Do Perfect Blackjack Trainer or Basis21 have ads?

Neither Perfect Blackjack Trainer nor Basis21 shows ads.

### Which is updated more often, Perfect Blackjack Trainer or Basis21?

Perfect Blackjack Trainer ships an update every 2 months, and Basis21 every 2 days. Most recently, Perfect Blackjack Trainer was updated on October 30, 2026 and Basis21 on October 31, 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.*