# Sailspots vs Norrsken

The clearest difference is ads: Norrsken at none against Sailspots's shown. Norrsken also leads on update cadence (every 6 days vs every 6 weeks). Sailspots's advantage is iOS requirement (13.0 vs 16.0). On price, 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.

Sailspots ships an update every 6 weeks, Norrsken every 6 days. The most recent releases landed on September 19, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Sailspots | Norrsken |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/norrsken/id1029938700/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | — | Free |
| Size | 26 MB | 26 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eliri AB](https://appshunter.io/developer/966167065) | [Johan Runbert](https://appshunter.io/developer/1008104316) |

## What reviewers say

### Sailspots

[App page](https://appshunter.io/ios/app/sailspots/id966167066)

**Features:** macOS Compatibility

**In-app purchases:** none


### Norrsken

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

This app forecasts the likelihood of seeing the Northern Lights based on your location. It provides real-time push notifications for optimal viewing conditions and includes features like a compass, long-term forecasts, and live data on solar wind and geomagnetic activity.

**Highlights:** Real-time Northern Lights probability forecast, Push notifications for good viewing conditions, Compass with haptic feedback, 3-day long-term forecast, Live solar wind and geomagnetic data, Webcam alerts for aurora appearance

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

**In-app purchases:** none


## Frequently asked questions

### Is Sailspots free?

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

### Is Norrsken free?

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

### Do Sailspots or Norrsken have ads?

Sailspots shows ads; Norrsken does not.

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

Sailspots ships an update every 6 weeks, and Norrsken every 6 days. Most recently, Sailspots was updated on September 19, 2026 and Norrsken on September 15, 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.*