# Windygo vs Undercast Weather Aether

The clearest difference is price: Windygo at Free against Undercast Weather Aether's $9.99. Undercast Weather Aether's advantage is in-app purchases (none vs 5) and update cadence (weekly vs every 5 weeks). On ads and iOS requirement there is nothing between them.

Windygo is free to download; Undercast Weather Aether costs $9.99 up front. Windygo sells 5 in-app purchases, starting at $1.99 per 7 days. Undercast Weather Aether asks for nothing beyond the download.

Windygo ships an update every 5 weeks, Undercast Weather Aether weekly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Windygo | Undercast Weather Aether |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.8 (332 ratings)](https://appshunter.io/ios/app/windygo-wind-direction/id6476741938/reviews)** | — |
| Number of ratings | **332** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Freemium | — |
| Size | 31 MB | 13 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Adam Fahlman](https://appshunter.io/developer/974051920) | [Nope Dragon LC](https://appshunter.io/developer/1870645889) |

## What reviewers say

### Windygo

[App page](https://appshunter.io/ios/app/windygo-wind-direction/id6476741938)

This app provides detailed wind information and weather forecasts, crucial for outdoor activities like drone piloting and surfing. It offers a unique wind compass, customizable location settings, and Kp index readings. Users can choose between a free version with essential features or a Pro version for extended forecasts and unlimited saved locations.

**Highlights:** Wind compass pointing to wind direction, Kp Index for drone owners, Customizable location names, Home screen widgets, Multiple wind speed units (mph, km/h, mps, knots), 10-day forecast (Pro version)

**Features:** Apple Watch app

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Windygo Wind Compass Weekly | $1.99 | per 7 days |
| Windygo Wind Compass Monthly | $3.99 | per month |
| Windygo Wind Compass Annual | $14.99 | per year |
| Windygo Lifetime 30% Off | $24.99 | one-time |
| Windygo Wind Compass Lifetime | $39.99 | one-time |


### Undercast Weather Aether

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Windygo free?

Windygo is free to download, with in-app purchases available.

### Is Undercast Weather Aether free?

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

### Do Windygo or Undercast Weather Aether have ads?

Neither Windygo nor Undercast Weather Aether shows ads.

### Which is updated more often, Windygo or Undercast Weather Aether?

Windygo ships an update every 5 weeks, and Undercast Weather Aether weekly. Most recently, Windygo was updated on November 4, 2026 and Undercast Weather Aether on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*