# 注册结构工程师题库2021 vs 注册结构工程师题库

The clearest difference is update cadence: 注册结构工程师题库 at every 5 months against 注册结构工程师题库2021's every 36 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 注册结构工程师题库2021 sells 4 one-off in-app purchases and 注册结构工程师题库 sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

注册结构工程师题库2021 ships an update every 36 months, 注册结构工程师题库 every 5 months. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | 注册结构工程师题库2021 | 注册结构工程师题库 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 5 months** |
| Size | 22 MB | 46 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Shenzhen Qianhaitiantian Financial Investment Service Co., Ltd.](https://appshunter.io/developer/1255477419) | [sanqifeng](https://appshunter.io/developer/1821353265) |

## What reviewers say

### 注册结构工程师题库2021

[App page](https://appshunter.io/ios/app/2021/id1580494696)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP1个月 | $2.99 | one-time |
| VIP2个月 | $3.99 | one-time |
| VIP6个月 | $6.99 | one-time |
| VIP12个月 | $9.99 | one-time |


### 注册结构工程师题库

[App page](https://appshunter.io/ios/app/2025/id6748624439)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 购买会员1个月 | $2.99 | one-time |
| 购买会员2个月 | $3.99 | one-time |
| 购买会员6个月 | $6.99 | one-time |
| 购买会员12个月 | $9.99 | one-time |


## Frequently asked questions

### Is 注册结构工程师题库2021 free?

注册结构工程师题库2021 is free to download, with in-app purchases available.

### Is 注册结构工程师题库 free?

注册结构工程师题库 is free to download, with in-app purchases available.

### Do 注册结构工程师题库2021 or 注册结构工程师题库 have ads?

Neither 注册结构工程师题库2021 nor 注册结构工程师题库 shows ads.

### Which is updated more often, 注册结构工程师题库2021 or 注册结构工程师题库?

注册结构工程师题库2021 ships an update every 36 months, and 注册结构工程师题库 every 5 months. Most recently, 注册结构工程师题库2021 was updated on October 10, 2026 and 注册结构工程师题库 on September 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*