# 建标库HD vs 四级听力

The clearest difference is rating: 建标库HD at 5.0 against 四级听力's 4.2. 建标库HD also leads on update cadence (every 7 months vs every 20 months) and iOS requirement (8.0 vs 12.0). 四级听力's advantage is ratings volume (5 vs 1) and device support (3 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.

建标库HD holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: 四级听力 has 5 ratings behind it against 1, so its average is the more settled of the two.

建标库HD ships an update every 7 months, 四级听力 every 20 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | 建标库HD | 四级听力 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hd/id589314959/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/4/id1125407565/reviews) |
| Number of ratings | 1 | **5** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 20 months |
| Monetization | Free | Free |
| Size | 29 MB | 120 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Luoyang Jianbiao Library Network Technology Co., Ltd.](https://appshunter.io/developer/1460554486) | [Shanghai Yuanlai Infomation Technology Co., Ltd.](https://appshunter.io/developer/958193889) |

## What reviewers say

### 建标库HD

[App page](https://appshunter.io/ios/app/hd/id589314959)

Access a comprehensive collection of architectural standards, regulations, and technical resources. This platform offers a community for industry professionals to exchange knowledge and stay updated on the latest building codes and practices.

**Highlights:** Extensive building standards and regulations, Large collection of architectural resources, Technical exchange community, Updated national and industry standards, Improved display and browsing experience, Update reminders and convenient downloads

**Features:** macOS Compatibility

**In-app purchases:** none


### 四级听力

[App page](https://appshunter.io/ios/app/4/id1125407565)

This app provides extensive practice materials for the College English Test Band 4 (CET-4) listening section. It features past exam papers to help users improve their listening comprehension for various English proficiency tests and self-study.

**Highlights:** CET-4 listening practice, Past exam papers, Improve listening comprehension, TOEFL and IELTS preparation, Self-study resource

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 建标库HD free?

建标库HD is free to download, with no in-app purchases.

### Is 四级听力 free?

四级听力 is free to download, with no in-app purchases.

### Which has better reviews, 建标库HD or 四级听力?

建标库HD is rated higher. 建标库HD averages 5.0 out of 5 from 1 ratings, while 四级听力 averages 4.2 from 5 ratings.

### Do 建标库HD or 四级听力 have ads?

Neither 建标库HD nor 四级听力 shows ads.

### Which is updated more often, 建标库HD or 四级听力?

建标库HD ships an update every 7 months, and 四级听力 every 20 months. Most recently, 建标库HD was updated on November 1, 2026 and 四级听力 on November 2, 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.*