# Undercast Weather Aether vs Wet Bulb Temperature Tracker

The clearest difference is price: Wet Bulb Temperature Tracker at Free against Undercast Weather Aether's $9.99. Undercast Weather Aether's advantage is device support (4 vs 2). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Wet Bulb Temperature Tracker is free to download; Undercast Weather Aether costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Undercast Weather Aether ships an update weekly, Wet Bulb Temperature Tracker every 4 days. The most recent releases landed on October 13, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Undercast Weather Aether | Wet Bulb Temperature Tracker |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/wet-bulb-temperature-tracker/id6783316363/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 13 MB | 17 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Nope Dragon LC](https://appshunter.io/developer/1870645889) | [Sameer Rajadnya](https://appshunter.io/developer/1749220190) |

## What reviewers say

### Undercast Weather Aether

[App page](https://appshunter.io/ios/app/undercast-weather-aether/id6760869971)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### Wet Bulb Temperature Tracker

[App page](https://appshunter.io/ios/app/wet-bulb-temperature-tracker/id6783316363)

This app tracks humid-heat conditions using Wet Bulb Globe Temperature (WBGT) to help you plan outdoor activities safely. It provides alerts, hourly timelines, and guidance based on risk levels.

**Highlights:** Wet Bulb Globe Temperature (WBGT) calculation, Humid-heat risk alerts, Hourly temperature timeline, Activity guidance by risk level, Manual calculation tool, Global city search

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Undercast Weather Aether free?

Undercast Weather Aether costs $9.99, with no in-app purchases.

### Is Wet Bulb Temperature Tracker free?

Wet Bulb Temperature Tracker is free to download, with no in-app purchases.

### Do Undercast Weather Aether or Wet Bulb Temperature Tracker have ads?

Neither Undercast Weather Aether nor Wet Bulb Temperature Tracker shows ads.

### Which is updated more often, Undercast Weather Aether or Wet Bulb Temperature Tracker?

Undercast Weather Aether ships an update weekly, and Wet Bulb Temperature Tracker every 4 days. Most recently, Undercast Weather Aether was updated on October 13, 2026 and Wet Bulb Temperature Tracker on October 19, 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.*