# HVAC Formulas Tech Calculator vs P3 HVAC Software Phone App

The clearest difference is rating: P3 HVAC Software Phone App at 4.8 against HVAC Formulas Tech Calculator's 3.7. P3 HVAC Software Phone App also leads on review sentiment (75% vs 33%). HVAC Formulas Tech Calculator's advantage is update cadence (every 4 days vs every 3 weeks) and ratings volume (15 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

P3 HVAC Software Phone App holds the better App Store score, 4.8 against 3.7. Both are backed by a comparable volume of ratings — 15 and 4 respectively. Written reviews point the same way: 33% of HVAC Formulas Tech Calculator's written reviews are positive against 75% of P3 HVAC Software Phone App's.

HVAC Formulas Tech Calculator ships an update every 4 days, P3 HVAC Software Phone App every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | HVAC Formulas Tech Calculator | P3 HVAC Software Phone App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (15 ratings)](https://appshunter.io/ios/app/hvac-formulas-tech-calculator/id1551053530/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/p3-hvac-software-phone-app/id6446238552/reviews)** |
| Number of ratings | **15** | 4 |
| Positive reviews | 33.3% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 1 MB | 93 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sergio Bost](https://appshunter.io/developer/1550113896) | [HVAC Business Solutions, LLC](https://appshunter.io/developer/522611719) |

## What reviewers say

### HVAC Formulas Tech Calculator

[App page](https://appshunter.io/ios/app/hvac-formulas-tech-calculator/id1551053530)

This app provides a comprehensive collection of HVAC formulas for technicians. It simplifies complex calculations for heating, ventilation, and air conditioning systems, saving time and effort compared to manual methods or general calculators. Designed by an industry professional, it offers an easy-to-use interface for quick access to essential formulas.

**Highlights:** Comprehensive HVAC formula collection, Formulas for air, fan laws, and heat, Simplified calculations for technicians, Easy-to-use interface, Designed by an HVAC technician, Saves time searching the web

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

**In-app purchases:** none


### P3 HVAC Software Phone App

[App page](https://appshunter.io/ios/app/p3-hvac-software-phone-app/id6446238552)

This comprehensive tool helps residential HVAC companies manage operations, boost revenue, and enhance customer service. It offers real-time scheduling, customer history access, and automated call handling to streamline business processes.

**Highlights:** Real-time scheduling, Customer management, Call answering & outbound booking, Sales & service tracking, Mobile access for technicians

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Formulas Tech Calculator free?

HVAC Formulas Tech Calculator is free to download, with no in-app purchases.

### Is P3 HVAC Software Phone App free?

P3 HVAC Software Phone App is free to download, with no in-app purchases.

### Which has better reviews, HVAC Formulas Tech Calculator or P3 HVAC Software Phone App?

P3 HVAC Software Phone App is rated higher. HVAC Formulas Tech Calculator averages 3.7 out of 5 from 15 ratings, while P3 HVAC Software Phone App averages 4.8 from 4 ratings.

### Do HVAC Formulas Tech Calculator or P3 HVAC Software Phone App have ads?

Neither HVAC Formulas Tech Calculator nor P3 HVAC Software Phone App shows ads.

### Which is updated more often, HVAC Formulas Tech Calculator or P3 HVAC Software Phone App?

HVAC Formulas Tech Calculator ships an update every 4 days, and P3 HVAC Software Phone App every 3 weeks. Most recently, HVAC Formulas Tech Calculator was updated on November 3, 2026 and P3 HVAC Software Phone App on November 3, 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.*