# Psychrometer °F vs HVAC Assistant

The clearest difference is in-app purchases: HVAC Assistant at none against Psychrometer °F's 1. HVAC Assistant also leads on ads (none vs shown) and rating (5.0 vs 4.5). Psychrometer °F's advantage is ratings volume (133 vs 1). On price there is nothing between them.

Both are free to download. Psychrometer °F sells 1 one-off in-app purchase. HVAC Assistant asks for nothing beyond the download.

HVAC Assistant holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Psychrometer °F has 133 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Psychrometer °F | HVAC Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (133 ratings)](https://appshunter.io/ios/app/psychrometer-f/id650395794/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hvac-assistant/id6784973205/reviews)** |
| Number of ratings | **133** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | — |
| Monetization | Ad-supported | **Free** |
| Size | 9 MB | 57 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JUN KANAYAMA](https://appshunter.io/developer/605648452) | [Fritz Bootle](https://appshunter.io/developer/6784973207) |

## What reviewers say

### Psychrometer °F

[App page](https://appshunter.io/ios/app/psychrometer-f/id650395794)

This app calculates thermal comfort by evaluating heat, cold, dryness, and moisture. It provides detailed air property calculations and indicates if conditions are within a comfortable range, with easy dial input and color-coded temperature.

**Highlights:** Thermal comfort calculation, Air property analysis, Color-coded temperature, Dial input, Outdoor weather integration, Psychrometer type selection

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### HVAC Assistant

[App page](https://appshunter.io/ios/app/hvac-assistant/id6784973205)

This app uses AI to help technicians and homeowners diagnose and troubleshoot HVAC system issues. It provides instant insights, real-time monitoring, and access to a brand resource library for faster, smarter repairs.

**Highlights:** AI-powered diagnostics for error codes, Real-time system health monitoring, Extensive brand resource library, Smart chat history for past fixes, Instant fault code resolution

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

**In-app purchases:** none


## Frequently asked questions

### Is Psychrometer °F free?

Psychrometer °F is free to download, with in-app purchases available.

### Is HVAC Assistant free?

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

### Which has better reviews, Psychrometer °F or HVAC Assistant?

HVAC Assistant is rated higher. Psychrometer °F averages 4.5 out of 5 from 133 ratings, while HVAC Assistant averages 5.0 from 1 ratings.

### Do Psychrometer °F or HVAC Assistant have ads?

Psychrometer °F shows ads; HVAC Assistant does not.

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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.*