# Space Weather Forecast vs WatchBarometer

The clearest difference is in-app purchases: Space Weather Forecast at none against WatchBarometer's 1. WatchBarometer's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. WatchBarometer sells 1 in-app purchase, starting at $3.99 per year. Space Weather Forecast asks for nothing beyond the download.

Space Weather Forecast ships an update every 2 months, WatchBarometer every 3 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Space Weather Forecast | WatchBarometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/watchbarometer/id6762093745/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 18 MB | 9 MB |
| Requires iOS | 26.2 | **26.0** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Toru Kawaguchi](https://appshunter.io/developer/1063198642) | [Bernhard Hering](https://appshunter.io/developer/327542085) |

## What reviewers say

### Space Weather Forecast

[App page](https://appshunter.io/ios/app/space-weather-forecast/id6760605769)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### WatchBarometer

[App page](https://appshunter.io/ios/app/watchbarometer/id6762093745)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WatchBarometer Jahresabo | $3.99 | per year |


## Frequently asked questions

### Is Space Weather Forecast free?

Space Weather Forecast is free to download, with no in-app purchases.

### Is WatchBarometer free?

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

### Do Space Weather Forecast or WatchBarometer have ads?

Space Weather Forecast shows ads; WatchBarometer does not.

### Which is updated more often, Space Weather Forecast or WatchBarometer?

Space Weather Forecast ships an update every 2 months, and WatchBarometer every 3 months. Most recently, Space Weather Forecast was updated on October 25, 2026 and WatchBarometer on October 25, 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.*