# Space Arc vs ISS Pass Finder

The clearest difference is ads: ISS Pass Finder at none against Space Arc's shown. ISS Pass Finder also leads on update cadence (daily vs monthly) and monetization model (free vs ad-supported). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Space Arc against 5.0 for ISS Pass Finder. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

Space Arc ships an update monthly, ISS Pass Finder daily. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Space Arc | ISS Pass Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/space-arc/id6759466047/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/iss-pass-finder/id6766076547/reviews) |
| Number of ratings | **3** | 2 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Daily** |
| Monetization | Ad-supported | **Free** |
| Size | 8 MB | 4 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Marc L. Melcher](https://appshunter.io/developer/371961192) | [Bill Bozeman](https://appshunter.io/developer/1805987087) |

## What reviewers say

### Space Arc

[App page](https://appshunter.io/ios/app/space-arc/id6759466047)

Explore celestial events with real-time data from NASA and other space agencies. Track satellites, view stunning astronomy pictures, and get personalized alerts for meteor showers, eclipses, and aurora.

**Highlights:** Real-time satellite tracking, NASA Picture of the Day, Global launch calendar, Celestial events calendar, Aurora alerts, Smart notifications, Offline event caching

**Features:** macOS Compatibility

**In-app purchases:** none


### ISS Pass Finder

[App page](https://appshunter.io/ios/app/iss-pass-finder/id6766076547)

This app predicts International Space Station passes and rates them based on real-time weather and visibility. It uses augmented reality to guide you to the exact viewing position in the sky, helping you avoid mistaking planes for the ISS.

**Highlights:** Real-time weather and visibility scoring, Pass ratings: Poor / Maybe / Excellent, Augmented Reality sky tracking, Accurate ISS pass predictions, Eliminates false sightings

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

**In-app purchases:** none


## Frequently asked questions

### Is Space Arc free?

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

### Is ISS Pass Finder free?

ISS Pass Finder is free to download, with no in-app purchases.

### Which has better reviews, Space Arc or ISS Pass Finder?

Space Arc and ISS Pass Finder are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do Space Arc or ISS Pass Finder have ads?

Space Arc shows ads; ISS Pass Finder does not.

### Which is updated more often, Space Arc or ISS Pass Finder?

Space Arc ships an update monthly, and ISS Pass Finder daily. Most recently, Space Arc was updated on October 28, 2026 and ISS Pass Finder on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*