# QuizClient vs Crystal Identifier

The clearest difference is in-app purchases: QuizClient at none against Crystal Identifier's 2. Crystal Identifier's advantage is update cadence (every 5 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Crystal Identifier sells 2 in-app purchases, starting at $4.99 per 7 days. QuizClient asks for nothing beyond the download.

QuizClient ships an update every 3 weeks, Crystal Identifier every 5 days. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | QuizClient | Crystal Identifier |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 16 MB | 6 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Vigleik Steinar Voll](https://appshunter.io/developer/898923144) | [Curvachip LLC](https://appshunter.io/developer/1774903560) |

## What reviewers say

### QuizClient

[App page](https://appshunter.io/ios/app/quizclient/id950495359)

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

**In-app purchases:** none


### Crystal Identifier

[App page](https://appshunter.io/ios/app/crystal-identifier-stoneclip/id6744538893)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StoneClip Premium Weekly | $4.99 | per 7 days |
| StoneClip Premium Yearly | $24.99 | per year |


## Frequently asked questions

### Is QuizClient free?

QuizClient is free to download, with no in-app purchases.

### Is Crystal Identifier free?

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

### Do QuizClient or Crystal Identifier have ads?

Neither QuizClient nor Crystal Identifier shows ads.

### Which is updated more often, QuizClient or Crystal Identifier?

QuizClient ships an update every 3 weeks, and Crystal Identifier every 5 days. Most recently, QuizClient was updated on October 12, 2026 and Crystal Identifier on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*