# HyTools vs Psychrometer °F

The clearest difference is rating: Psychrometer °F at 4.5 against HyTools's 4.0. Psychrometer °F also leads on ratings volume (133 vs 5) and review sentiment (67% vs 50%). HyTools's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 5 months). On price and in-app purchases there is nothing between them.

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

Psychrometer °F holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Psychrometer °F has 133 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 50% of HyTools's written reviews are positive against 67% of Psychrometer °F's.

HyTools ships an update every 6 weeks, Psychrometer °F every 5 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | HyTools | Psychrometer °F |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (5 ratings)](https://appshunter.io/ios/app/hytools/id537674477/reviews) | **[4.5 (133 ratings)](https://appshunter.io/ios/app/psychrometer-f/id650395794/reviews)** |
| Number of ratings | 5 | **133** |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | **Free** | Ad-supported |
| Size | 114 MB | 9 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [IMI Hydronic Engineering International SA](https://appshunter.io/developer/508015425) | [JUN KANAYAMA](https://appshunter.io/developer/605648452) |

## What reviewers say

### HyTools

[App page](https://appshunter.io/ios/app/hytools/id537674477)

This app provides HVAC professionals with a comprehensive suite of hydronic calculation tools. It assists with tasks like valve sizing, pressure drop calculations, and radiator power estimation. The tool offers unit conversion and language selection for user convenience.

**Highlights:** Hydronic calculator, Valve sizing and presetting, Radiator power estimation, Pipe sizing, Unit conversion, Pressure maintenance calculation

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

**In-app purchases:** none


### 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:** none


## Frequently asked questions

### Is HyTools free?

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

### Is Psychrometer °F free?

Psychrometer °F is free to download, with no in-app purchases.

### Which has better reviews, HyTools or Psychrometer °F?

Psychrometer °F is rated higher. HyTools averages 4.0 out of 5 from 5 ratings, while Psychrometer °F averages 4.5 from 133 ratings.

### Do HyTools or Psychrometer °F have ads?

Psychrometer °F shows ads; HyTools does not.

### Which is updated more often, HyTools or Psychrometer °F?

HyTools ships an update every 6 weeks, and Psychrometer °F every 5 months. Most recently, HyTools was updated on October 23, 2026 and Psychrometer °F on October 23, 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.*