# 冷云 vs HVAC Tools PT Chart

The clearest difference is in-app purchases: 冷云 at none against HVAC Tools PT Chart's 3. 冷云 also leads on iOS requirement (15.6 vs 18). On price there is nothing between them.

Both are free to download. HVAC Tools PT Chart sells 3 in-app purchases, starting at $4.99 per month. 冷云 asks for nothing beyond the download.

## The numbers

| Metric | 冷云 | HVAC Tools PT Chart |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 3 months |
| Size | 17 MB | 9 MB |
| Requires iOS | **15.6** | 18 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen ZKS Mobile IOT Tech Co., Ltd.](https://appshunter.io/developer/1296855170) | [Karol Jaworski](https://appshunter.io/developer/1799974477) |

## What reviewers say

### 冷云

[App page](https://appshunter.io/ios/app/coldclouds/id1296855171)

**In-app purchases:** none


### HVAC Tools PT Chart

[App page](https://appshunter.io/ios/app/hvac-tools-pt-chart-gauge/id6760602879)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gauge Pro | $4.99 | per month |
| Gauge Pro | $39.99 | per year |
| Gauge Pro | $39.99 | per year |


## Frequently asked questions

### Is 冷云 free?

冷云 is free to download, with no in-app purchases.

### Is HVAC Tools PT Chart free?

HVAC Tools PT Chart is free to download, with in-app purchases available.

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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.*