# Northern Lights Tracker vs Aurora Eos

The clearest difference is update cadence: Aurora Eos at every 11 days against Northern Lights Tracker's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Northern Lights Tracker sells 5 in-app purchases, starting at $3.99 per 7 days and Aurora Eos sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Northern Lights Tracker ships an update every 3 weeks, Aurora Eos every 11 days. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Northern Lights Tracker | Aurora Eos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (192 ratings)](https://appshunter.io/ios/app/northern-lights-tracker/id6569249780/reviews)** | — |
| Number of ratings | **192** | — |
| Positive reviews | 62.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Monetization | Freemium | — |
| Size | 50 MB | 69 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mehmet Ali Demir](https://appshunter.io/developer/1631537417) | [Seokyoung You](https://appshunter.io/developer/1673061465) |

## What reviewers say

### Northern Lights Tracker

[App page](https://appshunter.io/ios/app/northern-lights-tracker/id6569249780)

This app provides real-time predictions and forecasts for the aurora borealis using NOAA space weather data. It helps users find the best viewing locations and times, offering smart alerts and interactive maps for an optimal aurora hunting experience.

**Highlights:** Real-time aurora probability, NOAA-powered KP index, Interactive global aurora maps, Best viewing location recommendations, Space weather data monitoring, Smart aurora alerts, Apple Watch integration

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| week | $3.99 | per 7 days |
| month | $5.99 | per month |
| year | $34.99 | per year |
| Lifetime Premium | $49.99 | one-time |

**What reviewers like**

- 👍 Great for tracking trips
- 👍 Good for Aurora tracking
- 👍 Accurate for location
- 👍 Helps plan trips
- 👍 User-friendly interface

**What reviewers complain about**

- 💸 Not free, useless without payment
- 🐛 App crashes
- 💸 Misleading pricing, charged unexpectedly
- 🐛 Notifications are bogus/inaccurate
- 🐛 Enable Notifications shuts off

**Reported bugs**

- App crashes out of nowhere
- Phone part of app shows 0%
- Enable Notifications continuously shuts itself OFF
- Data seems outdated and freezes
- App crashes in Norway

**Requested features**

- Add widgets
- Correlate probability to times
- Show probability over time (next 24 hours)
- Allow setting threshold for 'good chance' notifications
- Show readings for around the world


### Aurora Eos

[App page](https://appshunter.io/ios/app/aurora-eos-kp-alert-forecast/id6748328478)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $5.99 | per month |
| Yearly Pro | $29.99 | per year |
| Pro Plan for lifetime | $69.99 | one-time |


## Frequently asked questions

### Is Northern Lights Tracker free?

Northern Lights Tracker is free to download, with in-app purchases available.

### Is Aurora Eos free?

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

### Do Northern Lights Tracker or Aurora Eos have ads?

Neither Northern Lights Tracker nor Aurora Eos shows ads.

### Which is updated more often, Northern Lights Tracker or Aurora Eos?

Northern Lights Tracker ships an update every 3 weeks, and Aurora Eos every 11 days. Most recently, Northern Lights Tracker was updated on November 8, 2026 and Aurora Eos on November 5, 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.*