# ISS Tracker vs EPSC

The clearest difference is iOS requirement: EPSC at 16.1 against ISS Tracker's 26.0. On price, update cadence, ads 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.

ISS Tracker ships an update weekly, EPSC every 4 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ISS Tracker | EPSC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (20 ratings)](https://appshunter.io/ios/app/iss-tracker-space-station/id6740058138/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Free | — |
| Size | 15 MB | 25 MB |
| Requires iOS | 26.0 | **16.1** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lucent Enterprises Ltd.](https://appshunter.io/developer/1448644115) | [Copernicus.org](https://appshunter.io/developer/507132942) |

## What reviewers say

### ISS Tracker

[App page](https://appshunter.io/ios/app/iss-tracker-space-station/id6740058138)

Monitor the International Space Station's live position and vital telemetry data in real-time. Track its orbit, altitude, velocity, and internal environmental systems. Ideal for space enthusiasts and students interested in space exploration.

**Highlights:** Real-time ISS position tracking, Interactive world map, Altitude and velocity data, Comprehensive telemetry monitoring, Environmental and power system data, Dark mode support

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

**In-app purchases:** none


### EPSC

[App page](https://appshunter.io/ios/app/epsc-dps2025/id6749314259)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ISS Tracker free?

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

### Is EPSC free?

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

### Do ISS Tracker or EPSC have ads?

Neither ISS Tracker nor EPSC shows ads.

### Which is updated more often, ISS Tracker or EPSC?

ISS Tracker ships an update weekly, and EPSC every 4 days. Most recently, ISS Tracker was updated on November 4, 2026 and EPSC 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.*