# HVAC PT Chart vs Ctrldoc 2.0

The clearest difference is in-app purchases: Ctrldoc 2.0 at none against HVAC PT Chart's 2. Ctrldoc 2.0 also leads on update cadence (fortnightly vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. HVAC PT Chart sells 2 one-off in-app purchases. Ctrldoc 2.0 asks for nothing beyond the download.

HVAC PT Chart ships an update every 5 months, Ctrldoc 2.0 fortnightly. The most recent releases landed on November 6, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | HVAC PT Chart | Ctrldoc 2.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (8 ratings)](https://appshunter.io/ios/app/hvac-pt-chart/id508212589/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 10 MB | 88 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Lattech Pty Ltd](https://appshunter.io/developer/1577327477) |

## What reviewers say

### HVAC PT Chart

[App page](https://appshunter.io/ios/app/hvac-pt-chart/id508212589)

This tool provides HVAC technicians with instant access to pressure and temperature data for over 100 refrigerants. It allows users to input one value to find the other, view detailed refrigerant properties, and email comprehensive charts and data.

**Highlights:** Pressure/temperature lookup for 100+ refrigerants, Input temperature to find pressure, or vice versa, Slider control for precise value selection, Email complete PT chart lists and refrigerant properties, Display common refrigerant properties, Adjust for atmospheric pressure based on city elevation, English and Metric unit options

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Banner Display Ad | $0.99 | one-time |
| HVAC Equipment Locator | $9.99 | one-time |


### Ctrldoc 2.0

[App page](https://appshunter.io/ios/app/ctrldoc-20/id6752470508)

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC PT Chart free?

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

### Is Ctrldoc 2.0 free?

Ctrldoc 2.0 is free to download, with no in-app purchases.

### Do HVAC PT Chart or Ctrldoc 2.0 have ads?

Neither HVAC PT Chart nor Ctrldoc 2.0 shows ads.

### Which is updated more often, HVAC PT Chart or Ctrldoc 2.0?

HVAC PT Chart ships an update every 5 months, and Ctrldoc 2.0 fortnightly. Most recently, HVAC PT Chart was updated on November 6, 2026 and Ctrldoc 2.0 on November 12, 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.*