# ZZER只二 vs firefly

The clearest difference is rating: firefly at 5.0 against ZZER只二's 2.5. ZZER只二's advantage is update cadence (weekly vs every 3 months) 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.

firefly 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.

ZZER只二 ships an update weekly, firefly every 3 months. Both last shipped on September 23, 2026.

## The numbers

| Metric | ZZER只二 | firefly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (17 ratings)](https://appshunter.io/ios/app/zzer/id1049175722/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/firefly/id6740244732/reviews)** |
| Number of ratings | **17** | 1 |
| Positive reviews | 51.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | Free | Free |
| Size | 74 MB | 133 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [上海翩行网络科技有限公司](https://appshunter.io/developer/1721852538) | [NIO Group](https://appshunter.io/developer/1829590773) |

## What reviewers say

### 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


### firefly

[App page](https://appshunter.io/ios/app/firefly/id6740244732)

This app enhances the driving experience for smart, premium electric cars designed for urban environments. It offers convenience features for users of these modern vehicles.

**Highlights:** Smart electric car integration, Premium urban vehicle features, Enhanced driving convenience, Modern lifestyle mobility

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is ZZER只二 free?

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

### Is firefly free?

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

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

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

### Do ZZER只二 or firefly have ads?

Neither ZZER只二 nor firefly shows ads.

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

ZZER只二 ships an update weekly, and firefly every 3 months. Most recently, ZZER只二 was updated on September 23, 2026 and firefly on September 23, 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.*