# 智慧建造 vs Hardness Conversion Master

The clearest difference is in-app purchases: 智慧建造 at none against Hardness Conversion Master's 1. 智慧建造 also leads on ads (none vs shown) and iOS requirement (11.0 vs 17.6). Hardness Conversion Master's advantage is update cadence (every 3 days vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Hardness Conversion Master sells 1 one-off in-app purchase. 智慧建造 asks for nothing beyond the download.

智慧建造 ships an update every 2 months, Hardness Conversion Master every 3 days. The most recent releases landed on October 19, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 智慧建造 | Hardness Conversion Master |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 33 MB | 259 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Shenzhen Lianshen Technology Development Company Ltd.](https://appshunter.io/developer/1564631220) | [POYU WANG](https://appshunter.io/developer/1883764660) |

## What reviewers say

### 智慧建造

[App page](https://appshunter.io/ios/app/id1564631218)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hardness Conversion Master

[App page](https://appshunter.io/ios/app/hardness-conversion-master/id6760411989)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro | $1.99 | one-time |


## Frequently asked questions

### Is 智慧建造 free?

智慧建造 is free to download, with no in-app purchases.

### Is Hardness Conversion Master free?

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

### Do 智慧建造 or Hardness Conversion Master have ads?

Hardness Conversion Master shows ads; 智慧建造 does not.

### Which is updated more often, 智慧建造 or Hardness Conversion Master?

智慧建造 ships an update every 2 months, and Hardness Conversion Master every 3 days. Most recently, 智慧建造 was updated on October 19, 2026 and Hardness Conversion Master on October 5, 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.*