# ISS Tracker vs ENSolarX

The clearest difference is price: ISS Tracker at Free against ENSolarX's $19.99. ISS Tracker also leads on update cadence (weekly vs every 4 weeks). ENSolarX's advantage is iOS requirement (15.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

ISS Tracker is free to download; ENSolarX costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ISS Tracker ships an update weekly, ENSolarX every 4 weeks. The most recent releases landed on November 4, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | ISS Tracker | ENSolarX |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| 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 weeks |
| Monetization | Free | — |
| Size | 15 MB | 70 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lucent Enterprises Ltd.](https://appshunter.io/developer/1448644115) | [Krzysztof Rucinski](https://appshunter.io/developer/1813556766) |

## 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


### ENSolarX

[App page](https://appshunter.io/ios/app/ensolarx/id6745728717)

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

**In-app purchases:** none


## Frequently asked questions

### Is ISS Tracker free?

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

### Is ENSolarX free?

ENSolarX costs $19.99, with no in-app purchases.

### Do ISS Tracker or ENSolarX have ads?

Neither ISS Tracker nor ENSolarX shows ads.

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

ISS Tracker ships an update weekly, and ENSolarX every 4 weeks. Most recently, ISS Tracker was updated on November 4, 2026 and ENSolarX on November 8, 2026.

---

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