# 机械设计云平台 vs Tolerance Master

The clearest difference is update cadence: 机械设计云平台 at every 4 weeks against Tolerance Master's every 6 months. 机械设计云平台 also leads on iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 机械设计云平台 sells 10 one-off in-app purchases and Tolerance Master sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

机械设计云平台 ships an update every 4 weeks, Tolerance Master every 6 months. The most recent releases landed on October 18, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 机械设计云平台 | Tolerance Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1450477637/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 6 months |
| Monetization | Free | — |
| Size | 28 MB | 3 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [新乐 裴](https://appshunter.io/developer/1450477636) | [磊 高](https://appshunter.io/developer/1879509033) |

## What reviewers say

### 机械设计云平台

[App page](https://appshunter.io/ios/app/id1450477637)

Access the latest design data for mechanical engineering, chemical equipment, materials, electrical, and architectural design. View detailed 3D models and animations, with future updates including calculation functions and a QR code to password generation feature.

**Highlights:** Latest design data standards, 3D models and animations, Cross-disciplinary data (chemical, electrical, etc.), Dynamic updates based on standards and user feedback, QR code for free software passwords, Future calculation functions

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30天，机械手册 | $1.99 | one-time |
| 购买金豆 | $1.99 | one-time |
| 6个月，机械手册 | $2.99 | one-time |
| 购买金豆 | $2.99 | one-time |
| 一年，机械手册 | $4.99 | one-time |
| 购买金豆 | $4.99 | one-time |
| 一年，机械手册、化工设备手册 | $14.99 | one-time |
| 购买金豆 | $14.99 | one-time |
| 购买金豆 | $29.99 | one-time |
| 一年，机械、化工、电气、建筑手册 | $149.99 | one-time |


### Tolerance Master

[App page](https://appshunter.io/ios/app/tolerance-master/id6759722609)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $0.99 | per month |


## Frequently asked questions

### Is 机械设计云平台 free?

机械设计云平台 is free to download, with in-app purchases available.

### Is Tolerance Master free?

Tolerance Master is free to download, with in-app purchases available.

### Do 机械设计云平台 or Tolerance Master have ads?

Neither 机械设计云平台 nor Tolerance Master shows ads.

### Which is updated more often, 机械设计云平台 or Tolerance Master?

机械设计云平台 ships an update every 4 weeks, and Tolerance Master every 6 months. Most recently, 机械设计云平台 was updated on October 18, 2026 and Tolerance Master on October 31, 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.*