Comparison

QCheck vs ZZER只二

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

QCheck

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
Read full description

QCheck is an app dedicated to identifying quantum cloud codes, committed to providing enterprises with comprehensive integrated solutions such as anti-counterfeiting traceability, anti counterfeiting, brand promotion, etc., providing users with a convenient, safe, and reassuring consumption experience for verification.

About

ZZER只二

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
Read full description

ZZER was founded in June 2015. It is a second-hand luxury goods consignment platform with the mission of "making second-hand sales simple". Headquartered in Shanghai, it has the ZZER APP and many offline stores. Business introduction: • Many categories, including bags, jewelry, clothing, shoes, accessories, watches, and tens of thousands of second-hand luxury goods. Men and women can pick their favorite products here; • All brands, from Hermes, Chanel, LV, Gucci, Dior, Celine, Goyard to Coach, MCM, Longchamp; • Self-service shopping, ZZER APP self-scan code to check prices and self-pay; • Authenticity guarantee, ZZER is a senior appraiser with China Inspection Qualification, and all products are physically identified; • Support one-stop purchase and consignment, including offline stores Free shipping with SF Express online, the consignment categories accepted include: bags, women's clothing, shoes, accessories, jewelry, watches, etc.; •ZZER Only Two APP launched a live explanation (on-demand) service. Users who cannot come to offline stores can ask the explainer to help them understand the quality and defects of all the consignment products in the store, and they can also try them on and wear them, which is like being there; To learn more about ZZER Only Two, you can use the following methods: Official website: https://www.zzer.com/ WeChat applet: ZZER Only Two Official WeChat public account: ZZER Only Two Official Xiaohongshu: ZZER Only Two

Screenshots

QCheck4 screens
ZZER只二4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

QCheck ships an update every 6 weeks, ZZER只二 weekly. The most recent releases landed on September 11, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
QCheck versus ZZER只二: the parameters behind the verdict, then further details
ParameterQCheckZZER只二
PriceFreeFree
Rating5.0 (1 ratings) — better2.5 (17 ratings)
Positive reviews—51.2% of reviews
Number of ratings117 — better
Update frequencyEvery 6 weeksWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size26 MB74 MB
Age rating17+17+
DeveloperShengzhen Qianhai Quantum Cloud Code Technology Co.,Ltd.Shanghai Pianxing Network Technology Co., Ltd.

Customer experience

QCheck

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

ZZER只二

All ratings17 ratings
Positive29.4%
Neutral17.6%
Negative52.9%
Written reviews43 reviews
Positive51.2%
Neutral4.7%
Negative44.2%

In-app purchases

None

QCheck

No in-app purchases

None

ZZER只二

No in-app purchases

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 11, 2026 and ZZER只二 on October 6, 2026.

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