# Zpark vs IRF Aurora Alert

The clearest difference is update cadence: IRF Aurora Alert at every 4 days against Zpark's monthly. On price, ads, 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.

Zpark ships an update monthly, IRF Aurora Alert every 4 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Zpark | IRF Aurora Alert |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | — | Free |
| Size | 71 MB | 6 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Grepit AB](https://appshunter.io/developer/1520166439) | [Swedish Institute of Space Physics](https://appshunter.io/developer/1656031891) |

## What reviewers say

### Zpark

[App page](https://appshunter.io/ios/app/zpark/id1520166437)

**Features:** Apple Wallet

**In-app purchases:** none


### IRF Aurora Alert

[App page](https://appshunter.io/ios/app/irf-aurora-alert/id6466981930)

Receive timely notifications when the aurora borealis is visible near Kiruna, Sweden. This app helps you predict and experience the northern lights by alerting you to optimal viewing conditions.

**Highlights:** Aurora visibility notifications, Optimized for Kiruna, Sweden, Predicts aurora viewing conditions, Alerts for dark, clear skies, Minimizes light pollution impact

**In-app purchases:** none


## Frequently asked questions

### Is Zpark free?

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

### Is IRF Aurora Alert free?

IRF Aurora Alert is free to download, with no in-app purchases.

### Do Zpark or IRF Aurora Alert have ads?

Neither Zpark nor IRF Aurora Alert shows ads.

### Which is updated more often, Zpark or IRF Aurora Alert?

Zpark ships an update monthly, and IRF Aurora Alert every 4 days. Most recently, Zpark was updated on October 29, 2026 and IRF Aurora Alert on October 30, 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.*