# HVAC Refrigerant PT vs CORE Service

The clearest difference is review sentiment: HVAC Refrigerant PT at 83% against CORE Service's 0%. HVAC Refrigerant PT also leads on rating (4.8 vs 3.6) and ratings volume (64 vs 19). CORE Service's advantage is price (Free vs $6.99) and update cadence (every 3 months vs every 13 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

CORE Service is free to download; HVAC Refrigerant PT costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HVAC Refrigerant PT holds the better App Store score, 4.8 against 3.6. Both are backed by a comparable volume of ratings — 64 and 19 respectively. Written reviews point the same way: 83% of HVAC Refrigerant PT's written reviews are positive against 0% of CORE Service's.

HVAC Refrigerant PT ships an update every 13 months, CORE Service every 3 months. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | HVAC Refrigerant PT | CORE Service |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[4.8 (64 ratings)](https://appshunter.io/ios/app/hvac-refrigerant-pt/id633380165/reviews)** | [3.6 (19 ratings)](https://appshunter.io/ios/app/core-service/id1566612696/reviews) |
| Number of ratings | **64** | 19 |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 47 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cyberprodigy LLC](https://appshunter.io/developer/510284906) | [Lennox Industries](https://appshunter.io/developer/355049651) |

## What reviewers say

### HVAC Refrigerant PT

[App page](https://appshunter.io/ios/app/hvac-refrigerant-pt/id633380165)

This utility app provides HVAC professionals with essential refrigerant pressure and temperature charts, along with detailed physical properties for numerous refrigerants. It offers customizable units for temperature and pressure, making it a comprehensive tool for air conditioning system diagnostics and maintenance.

**Highlights:** Refrigerant pressure/temperature (PT) charts, Bubble and Dew Point data, Customizable temperature units (C/F), Selectable pressure units (psig, kPa, psia, etc.), Detailed refrigerant physical properties, Color code information

**Features:** macOS Compatibility

**In-app purchases:** none


### CORE Service

[App page](https://appshunter.io/ios/app/core-service/id1566612696)

This app provides a wireless interface for commercial HVAC technicians to control and service specific Lennox rooftop units. It offers guided setup, enhanced testing, and parameter configuration to streamline the service process.

**Highlights:** Wireless mobile service app, Guided setup with progress indicators, Enhanced test functionality, Real-time sensor readings and trending, Parameter configuration, Exportable setup summaries

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Refrigerant PT free?

HVAC Refrigerant PT costs $6.99, with no in-app purchases.

### Is CORE Service free?

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

### Which has better reviews, HVAC Refrigerant PT or CORE Service?

HVAC Refrigerant PT is rated higher. HVAC Refrigerant PT averages 4.8 out of 5 from 64 ratings, while CORE Service averages 3.6 from 19 ratings.

### Do HVAC Refrigerant PT or CORE Service have ads?

Neither HVAC Refrigerant PT nor CORE Service shows ads.

### Which is updated more often, HVAC Refrigerant PT or CORE Service?

HVAC Refrigerant PT ships an update every 13 months, and CORE Service every 3 months. Most recently, HVAC Refrigerant PT was updated on November 1, 2026 and CORE Service on November 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.*