# HVAC Tools PT Chart vs RefrigCharge

The clearest difference is price: HVAC Tools PT Chart at Free against RefrigCharge's $7.99. RefrigCharge's advantage is in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement there is nothing between them.

HVAC Tools PT Chart is free to download; RefrigCharge costs $7.99 up front. HVAC Tools PT Chart sells 3 in-app purchases, starting at $4.99 per month. RefrigCharge asks for nothing beyond the download.

HVAC Tools PT Chart ships an update monthly, RefrigCharge every 6 weeks. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HVAC Tools PT Chart | RefrigCharge |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Size | 9 MB | 1 MB |
| Requires iOS | 18 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Karol Jaworski](https://appshunter.io/developer/1799974477) | [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858) |

## What reviewers say

### 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 |


### RefrigCharge

[App page](https://appshunter.io/ios/app/refrigcharge/id6761541500)

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Tools PT Chart free?

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

### Is RefrigCharge free?

RefrigCharge costs $7.99, with no in-app purchases.

### Do HVAC Tools PT Chart or RefrigCharge have ads?

Neither HVAC Tools PT Chart nor RefrigCharge shows ads.

### Which is updated more often, HVAC Tools PT Chart or RefrigCharge?

HVAC Tools PT Chart ships an update monthly, and RefrigCharge every 6 weeks. Most recently, HVAC Tools PT Chart was updated on October 28, 2026 and RefrigCharge 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.*