# 建标知网 vs CHM+

The clearest difference is ads: 建标知网 at none against CHM+'s shown. CHM+'s advantage is review sentiment (83% vs 67%). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. 建标知网 sells 10 one-off in-app purchases and CHM+ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

建标知网 ships an update monthly, CHM+ every 6 weeks. The most recent releases landed on September 22, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | 建标知网 | CHM+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/chm-plus-chm-document-reader/id6745147168/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 66.7% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 58 MB | 16 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [中国建筑工业出版社](https://appshunter.io/developer/615984710) | [俊锋 仝](https://appshunter.io/developer/1209824000) |

## What reviewers say

### 建标知网

[App page](https://appshunter.io/ios/app/id1335906716)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 普通会员(1个月) | $2.99 | one-time |
| 普通会员(3个月) | $6.99 | one-time |
| 普通会员(1年)-双11 | $14.99 | one-time |
| 普通会员(1年) | $19.99 | one-time |
| 旗舰会员(1个月) | $24.99 | one-time |
| 旗舰会员(3个月) | $69.99 | one-time |
| 1048金币 | $149.99 | one-time |
| 1598金币 | $229.99 | one-time |
| 旗舰会员(1年) | $249.99 | one-time |
| 旗舰会员(1年)-双11 | $299.99 | one-time |


### CHM+

[App page](https://appshunter.io/ios/app/chm-plus-chm-document-reader/id6745147168)

This app provides a streamlined way to read CHM documents on iOS devices. It offers quick import from local storage and iCloud, fast opening of large files, and efficient chapter navigation. Enjoy a smooth reading experience with support for multiple encodings.

**Highlights:** Quick document import (local storage, iCloud), Fast opening of large CHM files, Table of contents chapter switching, Multi-screen collaboration on iPad, Support for multiple encoding types, Smooth reading experience

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CHM Pro | $4.99 | one-time |


## Frequently asked questions

### Is 建标知网 free?

建标知网 is free to download, with in-app purchases available.

### Is CHM+ free?

CHM+ is free to download, with in-app purchases available.

### Do 建标知网 or CHM+ have ads?

CHM+ shows ads; 建标知网 does not.

### Which is updated more often, 建标知网 or CHM+?

建标知网 ships an update monthly, and CHM+ every 6 weeks. Most recently, 建标知网 was updated on September 22, 2026 and CHM+ on September 26, 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.*