# Psychrometer °F vs YJACK VIEW

The clearest difference is rating: Psychrometer °F at 4.5 against YJACK VIEW's 2.9. Psychrometer °F also leads on review sentiment (67% vs 30%) and ratings volume (133 vs 19). YJACK VIEW's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and update cadence there is nothing between them.

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

Psychrometer °F holds the better App Store score, 4.5 against 2.9. That said, the two scores are not equally well evidenced: Psychrometer °F has 133 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 67% of Psychrometer °F's written reviews are positive against 30% of YJACK VIEW's.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Psychrometer °F | YJACK VIEW |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (133 ratings)](https://appshunter.io/ios/app/psychrometer-f/id650395794/reviews)** | [2.9 (19 ratings)](https://appshunter.io/ios/app/yjack-view/id1492358956/reviews) |
| Number of ratings | **133** | 19 |
| Positive reviews | **66.7% of reviews** | 30.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | Ad-supported | **Free** |
| Size | 9 MB | 18 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JUN KANAYAMA](https://appshunter.io/developer/605648452) | [YELLOW JACKET](https://appshunter.io/developer/924701171) |

## 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 |


### YJACK VIEW

[App page](https://appshunter.io/ios/app/yjack-view/id1492358956)

This app provides a comprehensive HVAC/R diagnostic solution by integrating with specialized hardware. It allows users to view live data, create and share service reports, and perform detailed system analysis for pressure, temperature, evacuation, and more.

**Highlights:** Live data monitoring, Customizable PDF service reports, Enhanced datalogging, Pressure and temperature analysis, Evacuation monitoring, Psychrometric analysis, Electrical readings

**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 YJACK VIEW free?

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

### Which has better reviews, Psychrometer °F or YJACK VIEW?

Psychrometer °F is rated higher. Psychrometer °F averages 4.5 out of 5 from 133 ratings, while YJACK VIEW averages 2.9 from 19 ratings.

### Do Psychrometer °F or YJACK VIEW have ads?

Psychrometer °F shows ads; YJACK VIEW does not.

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

Psychrometer °F ships an update every 5 months, and YJACK VIEW every 5 months. Most recently, Psychrometer °F was updated on November 6, 2026 and YJACK VIEW 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.*