# Klart vs Norrsken

The clearest difference is ads: Norrsken at none against Klart's shown. Norrsken also leads on rating (5.0 vs 4.7) and monetization model (free vs ad-supported). Klart's advantage is ratings volume (184 vs 3). On price, update cadence, 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.

Norrsken holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Klart has 184 ratings behind it against 3, so its average is the more settled of the two.

Klart ships an update weekly, Norrsken every 5 days. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Klart | Norrsken |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (184 ratings)](https://appshunter.io/ios/app/klart-vader/id352024322/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/norrsken/id1029938700/reviews)** |
| Number of ratings | **184** | 3 |
| Positive reviews | 84.2% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Ad-supported | **Free** |
| Size | 68 MB | 24 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Klart Vädertjänster AB](https://appshunter.io/developer/638202240) | [Johan Runbert](https://appshunter.io/developer/1008104316) |

## What reviewers say

### Klart

[App page](https://appshunter.io/ios/app/klart-vader/id352024322)

Get detailed 14-day and hourly weather forecasts. Compare predictions from multiple sources, check ski conditions, pollen levels, and water temperatures. Receive severe weather alerts and explore seasonal weather patterns for travel planning.

**Highlights:** 14-day and hourly forecasts, Weather forecast comparison, Ski weather details, Pollen forecasts, Seasonal and travel weather, Water temperature reports, Severe weather alerts

**Features:** Vision Pro support

**In-app purchases:** none


### Norrsken

[App page](https://appshunter.io/ios/app/norrsken/id1029938700)

This app estimates your chances of seeing the Northern Lights based on your location. Receive real-time push notifications for optimal viewing conditions and access a compass, long-term forecasts, and live data on solar wind and geomagnetic activity.

**Highlights:** Real-time Northern Lights probability calculation, Push notifications for good viewing conditions, Live webcam alerts, Compass with haptic feedback, 3-day long-term forecast, Photo timestamp and location overlay, Cloud radar images, Live solar wind and geomagnetic data

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

**In-app purchases:** none


## Frequently asked questions

### Is Klart free?

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

### Is Norrsken free?

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

### Which has better reviews, Klart or Norrsken?

Norrsken is rated higher. Klart averages 4.7 out of 5 from 184 ratings, while Norrsken averages 5.0 from 3 ratings.

### Do Klart or Norrsken have ads?

Klart shows ads; Norrsken does not.

### Which is updated more often, Klart or Norrsken?

Klart ships an update weekly, and Norrsken every 5 days. Most recently, Klart was updated on November 10, 2026 and Norrsken on November 6, 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.*