# Psychrometer °F vs Notatly.com

The clearest difference is in-app purchases: Notatly.com at none against Psychrometer °F's 1. Notatly.com also leads on ads (none vs shown) and update cadence (every 2 days vs every 5 months). On price, device support and iOS requirement there is nothing between them.

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

Psychrometer °F ships an update every 5 months, Notatly.com every 2 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Psychrometer °F | Notatly.com |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 9 MB | 56 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JUN KANAYAMA](https://appshunter.io/developer/605648452) | [Janem Labs LLC](https://appshunter.io/developer/6787670002) |

## 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 |


### Notatly.com

[App page](https://appshunter.io/ios/app/notatlycom/id6787670000)

**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 Notatly.com free?

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

### Do Psychrometer °F or Notatly.com have ads?

Psychrometer °F shows ads; Notatly.com does not.

### Which is updated more often, Psychrometer °F or Notatly.com?

Psychrometer °F ships an update every 5 months, and Notatly.com every 2 days. Most recently, Psychrometer °F was updated on November 1, 2026 and Notatly.com on October 31, 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.*