# Space Station Tracker vs Z

The clearest difference is update cadence: Z at every 2 months against Space Station Tracker's every 20 months. Z also leads on iOS requirement (13.0 vs 17.0). 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.

Space Station Tracker ships an update every 20 months, Z every 2 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Space Station Tracker | Z |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/space-station-tracker/id1673123826/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 4 MB | 31 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Jaimeson Bilodeau](https://appshunter.io/developer/426891054) | [Emmanuel Sunday](https://appshunter.io/developer/1578044288) |

## What reviewers say

### Space Station Tracker

[App page](https://appshunter.io/ios/app/space-station-tracker/id1673123826)

Follow the International Space Station's live location on a globe and get alerts for visible flyovers at your exact location. Features a compass view to help you spot it in the sky.

**Highlights:** Real-time ISS location tracking, Globe view with orbital trajectory, Upcoming visible flyover alerts, GPS-based viewing calculations, Compass view for sky spotting, Azimuth and elevation details

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

**In-app purchases:** none


### Z

[App page](https://appshunter.io/ios/app/z-ap/id6759113648)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Space Station Tracker free?

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

### Is Z free?

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

### Do Space Station Tracker or Z have ads?

Neither Space Station Tracker nor Z shows ads.

### Which is updated more often, Space Station Tracker or Z?

Space Station Tracker ships an update every 20 months, and Z every 2 months. Most recently, Space Station Tracker was updated on October 24, 2026 and Z on October 16, 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.*