# 焊工证宝典 vs CAD手机看图

The clearest difference is review sentiment: CAD手机看图 at 100% against 焊工证宝典's 83%. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 焊工证宝典 sells 5 one-off in-app purchases and CAD手机看图 sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

焊工证宝典 ships an update every 2 months, CAD手机看图 every 6 weeks. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | 焊工证宝典 | CAD手机看图 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 82.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 78 MB | 29 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sichuan Kewei Mengxiang Technology Co., Ltd.](https://appshunter.io/developer/1374234832) | [全伟 杨](https://appshunter.io/developer/1741269000) |

## What reviewers say

### 焊工证宝典

[App page](https://appshunter.io/ios/app/2026/id1585796353)

This app provides an updated question bank for welding certification exams, utilizing data analysis to help users prepare efficiently. It offers various practice modes, error tracking, and a favorites feature for personalized study. Offline access ensures learning is possible without an internet connection.

**Highlights:** Real-time updated question bank, Multiple practice modes, Topic-specific exercises, Automatic错题库 (error bank), Customizable favorites, Offline study mode

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 理论高效学习-30天 | $4.99 | one-time |
| 理论高效学习-180天 | $6.99 | one-time |
| 消防课程 | $7.99 | one-time |
| 焊工题库VIP | $9.99 | one-time |
| 理论高效学习-365天 | $9.99 | one-time |


### CAD手机看图

[App page](https://appshunter.io/ios/app/cad-cad3ddiy/id6502741471)

This app offers a suite of engineering tools for viewing CAD drawings, performing measurements, and utilizing AI assistants for tasks like writing and planning. It also includes engineering calculators and specialized measurement tools for various work scenarios.

**Highlights:** High-definition DWG drawing viewer, Engineering calculators, AI office assistant, Customizable check-in camera, Engineering measurement tools, PDF export

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CAD全能工程王周费会员 | $4.99 | per 7 days |
| CAD全能工程王月费会员 | $7.99 | per month |
| CAD全能工程王年费会员 | $24.99 | per year |


## Frequently asked questions

### Is 焊工证宝典 free?

焊工证宝典 is free to download, with in-app purchases available.

### Is CAD手机看图 free?

CAD手机看图 is free to download, with in-app purchases available.

### Do 焊工证宝典 or CAD手机看图 have ads?

Neither 焊工证宝典 nor CAD手机看图 shows ads.

### Which is updated more often, 焊工证宝典 or CAD手机看图?

焊工证宝典 ships an update every 2 months, and CAD手机看图 every 6 weeks. Most recently, 焊工证宝典 was updated on November 7, 2026 and CAD手机看图 on November 8, 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.*