# Psychrometer °F vs IonicWallz

The clearest difference is ads: IonicWallz at none against Psychrometer °F's shown. IonicWallz also leads on update cadence (daily vs every 5 months) and iOS requirement (15.1 vs 18.6). On price, in-app purchases and device support 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 ships an update every 5 months, IonicWallz daily. The most recent releases landed on August 17, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Psychrometer °F | IonicWallz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (133 ratings)](https://appshunter.io/ios/app/psychrometer-f/id650395794/reviews)** | — |
| Number of ratings | **133** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Daily** |
| Monetization | Ad-supported | — |
| Size | 9 MB | 27 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JUN KANAYAMA](https://appshunter.io/developer/605648452) | [SolutionDots](https://appshunter.io/developer/879913799) |

## 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:** none


### IonicWallz

[App page](https://appshunter.io/ios/app/ionicwallz/id6754519214)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Psychrometer °F free?

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

### Is IonicWallz free?

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

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

Psychrometer °F shows ads; IonicWallz does not.

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

Psychrometer °F ships an update every 5 months, and IonicWallz daily. Most recently, Psychrometer °F was updated on August 17, 2026 and IonicWallz on September 9, 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.*