# Blackjack vs Basis21

The clearest difference is ads: Basis21 at none against Blackjack's shown. Basis21 also leads on update cadence (every 2 days vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Blackjack 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.

Blackjack ships an update every 5 weeks, Basis21 every 2 days. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Blackjack | Basis21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/blackjack-learn-strategy/id6749189661/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 60 MB | 14 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew L'Italien](https://appshunter.io/developer/1793030180) | [VINCENT WAH KIT WONG](https://appshunter.io/developer/6782601296) |

## What reviewers say

### Blackjack

[App page](https://appshunter.io/ios/app/blackjack-learn-strategy/id6749189661)

Master blackjack strategy with realistic hands and instant feedback. Practice optimal decisions, view strategy charts, and track your progress. Customize rules and themes for a personalized learning experience.

**Highlights:** Hands-on practice with realistic hands, Instant feedback on decisions, Detailed strategy charts, Customizable rule settings, Performance statistics tracking, Customizable themes including dark mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | 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 Blackjack free?

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

### Is Basis21 free?

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

### Do Blackjack or Basis21 have ads?

Blackjack shows ads; Basis21 does not.

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

Blackjack ships an update every 5 weeks, and Basis21 every 2 days. Most recently, Blackjack was updated on October 8, 2026 and Basis21 on October 14, 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.*