# Space Station Tracker vs Deduci

The clearest difference is in-app purchases: Space Station Tracker at none against Deduci's 1. Deduci's advantage is update cadence (every 3 days vs every 20 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Deduci sells 1 in-app purchase, starting at $5.99 per month. Space Station Tracker asks for nothing beyond the download.

Space Station Tracker ships an update every 20 months, Deduci every 3 days. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Space Station Tracker | Deduci |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 4 MB | 13 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Jaimeson Bilodeau](https://appshunter.io/developer/426891054) | [Sarah Letchford](https://appshunter.io/developer/1830401368) |

## 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


### Deduci

[App page](https://appshunter.io/ios/app/deduci/id6764140886)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deduci Pro | $5.99 | per month |


## Frequently asked questions

### Is Space Station Tracker free?

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

### Is Deduci free?

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

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

Neither Space Station Tracker nor Deduci shows ads.

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

Space Station Tracker ships an update every 20 months, and Deduci every 3 days. Most recently, Space Station Tracker was updated on October 4, 2026 and Deduci on October 9, 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.*