# QCheck vs ZZER只二

The clearest difference is rating: QCheck at 5.0 against ZZER只二's 2.5. ZZER只二's advantage is update cadence (weekly vs every 6 weeks) and ratings volume (17 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

QCheck holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: ZZER只二 has 17 ratings behind it against 1, so its average is the more settled of the two.

QCheck ships an update every 6 weeks, ZZER只二 weekly. The most recent releases landed on September 30, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | QCheck | ZZER只二 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/qcheck-identify-quantum-code/id1016401951/reviews)** | [2.5 (17 ratings)](https://appshunter.io/ios/app/zzer/id1049175722/reviews) |
| Number of ratings | 1 | **17** |
| Positive reviews | — | 51.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 26 MB | 74 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Shengzhen Qianhai Quantum Cloud Code Technology Co.,Ltd.](https://appshunter.io/developer/1513551332) | [Shanghai Pianxing Network Technology Co., Ltd.](https://appshunter.io/developer/1721852538) |

## What reviewers say

### QCheck

[App page](https://appshunter.io/ios/app/qcheck-identify-quantum-code/id1016401951)

This app helps businesses identify quantum cloud codes for integrated solutions like anti-counterfeiting and brand promotion. It offers users a convenient, safe, and reassuring consumption experience for verification purposes.

**Highlights:** Identify quantum cloud codes, Anti-counterfeiting traceability, Brand promotion solutions, Secure consumption experience, Enterprise integrated solutions

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

**In-app purchases:** none


### ZZER只二

[App page](https://appshunter.io/ios/app/zzer/id1049175722)

This platform simplifies the sale of pre-owned luxury items. Browse a wide selection of authenticated bags, jewelry, clothing, and more from top brands. Offers online and in-store consignment with live video explanations for remote shoppers.

**Highlights:** Second-hand luxury goods consignment, Wide range of categories and brands, Authenticity guarantee by senior appraisers, Self-service shopping and payment, One-stop purchase and consignment, Live video explanation service

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

**In-app purchases:** none


## Frequently asked questions

### Is QCheck free?

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

### Is ZZER只二 free?

ZZER只二 is free to download, with no in-app purchases.

### Which has better reviews, QCheck or ZZER只二?

QCheck is rated higher. QCheck averages 5.0 out of 5 from 1 ratings, while ZZER只二 averages 2.5 from 17 ratings.

### Do QCheck or ZZER只二 have ads?

Neither QCheck nor ZZER只二 shows ads.

### Which is updated more often, QCheck or ZZER只二?

QCheck ships an update every 6 weeks, and ZZER只二 weekly. Most recently, QCheck was updated on September 30, 2026 and ZZER只二 on October 10, 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.*