# 21 Sharp vs WordWiz

21 Sharp and WordWiz are too close to call on the numbers: across 8 compared parameters — price, rating, ratings volume and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 21 Sharp sells 1 one-off in-app purchase and WordWiz sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for 21 Sharp against 5.0 for WordWiz. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | 21 Sharp | WordWiz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/21-sharp/id6757319502/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/wordwiz-learn-new-words/id6783619727/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Monetization | Free with in-app purchases | Freemium |
| Size | 1 MB | 76 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [busyslacker llc](https://appshunter.io/developer/1576079901) | [Howard Tran](https://appshunter.io/developer/6782248863) |

## What reviewers say

### 21 Sharp

[App page](https://appshunter.io/ios/app/21-sharp/id6757319502)

Master blackjack strategy and card counting with this professional-grade trainer. Learn optimal plays, practice counting systems, and track your progress with realistic simulations and reference guides. Reduce the house edge and gain a competitive advantage.

**Highlights:** Basic strategy training, Card counting drills (Hi-Lo), Realistic practice table, Reference guides, Progress tracking and achievements

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 21 Sharp Premium | $2.99 | one-time |


### WordWiz

[App page](https://appshunter.io/ios/app/wordwiz-learn-new-words/id6783619727)

Instantly define words and build a personalized vocabulary library. This app creates flashcards and quizzes using research-backed memorization techniques to help you learn and remember new words effectively.

**Highlights:** Instant word definition, Personalized flashcard creation, Varied quiz generation, Evidence-informed review techniques, Vocabulary library organization, Curated word collections, Detailed learning progress tracking

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WordWiz Plus Monthly | $1.99 | per month |
| WordWiz Plus Annual | $14.99 | per year |


## Frequently asked questions

### Is 21 Sharp free?

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

### Is WordWiz free?

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

### Which has better reviews, 21 Sharp or WordWiz?

21 Sharp and WordWiz are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do 21 Sharp or WordWiz have ads?

Neither 21 Sharp nor WordWiz shows ads.

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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.*