# 孔夫子旧书网 vs KMZ

The clearest difference is iOS requirement: KMZ at 9.0 against 孔夫子旧书网's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 孔夫子旧书网 | KMZ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.4K ratings)](https://appshunter.io/ios/app/id914399672/reviews)** | — |
| Number of ratings | **1.4K** | — |
| Positive reviews | 74.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | Every 10 days |
| Monetization | Free | — |
| Size | 290 MB | 29 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Kongwang Cultural Books Co., Ltd](https://appshunter.io/developer/1762334435) | [昆明安豆科技有限公司](https://appshunter.io/developer/1486480484) |

## What reviewers say

### 孔夫子旧书网

[App page](https://appshunter.io/ios/app/id914399672)

This platform connects buyers and sellers of used books and cultural collectibles. It features a vast online bookstore and auction house, specializing in traditional Chinese culture and rare items. Discover and trade antique books, art, and more.

**Highlights:** Vast selection of used and antique books, Online auction platform for collectibles, Thousands of registered bookstores, Daily new auction items, Wide range of art and cultural items, Focus on traditional Chinese culture

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

**In-app purchases:** none

**What reviewers like**

- 🙌 Convenient platform for buying and selling used books
- 🔍 Wide selection of books, including rare and out-of-print titles
- 💰 Affordable prices for second-hand books
- 📚 Helpful for book lovers and collectors

**What reviewers complain about**

- 🤑 High service fees for sellers
- 🕰️ Slow delivery and order processing times
- 🔍 Unclear or misleading book descriptions
- 🤖 Poor customer service and lack of responsiveness
- 🔒 Difficulty for international users to register and access the platform

**Reported bugs**

- App crashes and freezes, especially after updates
- Inconsistent or missing order/transaction history
- Inability to update contact information or preferences

**Requested features**

- Improved search and filtering options
- Integration of book donation/trade-in functionality
- Enhanced buyer/seller communication and dispute resolution
- Streamlined registration and account management for all users


### KMZ

[App page](https://appshunter.io/ios/app/kmz/id6462084886)

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

**In-app purchases:** none


## Frequently asked questions

### Is 孔夫子旧书网 free?

孔夫子旧书网 is free to download, with no in-app purchases.

### Is KMZ free?

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

### Do 孔夫子旧书网 or KMZ have ads?

Neither 孔夫子旧书网 nor KMZ shows ads.

### Which is updated more often, 孔夫子旧书网 or KMZ?

孔夫子旧书网 ships an update every 10 days, and KMZ every 10 days. Most recently, 孔夫子旧书网 was updated on November 1, 2026 and KMZ on October 27, 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.*