# ISS Tracker vs EMFMeter

The clearest difference is review sentiment: ISS Tracker at 100% against EMFMeter's 60%. ISS Tracker also leads on in-app purchases (none vs 3) and ads (none vs shown). EMFMeter's advantage is ratings volume (98 vs 5). On price, device support and iOS requirement there is nothing between them.

Both are free to download. EMFMeter sells 3 in-app purchases, starting at $3.99 per 7 days. ISS Tracker asks for nothing beyond the download.

ISS Tracker holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: EMFMeter has 98 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 100% of ISS Tracker's written reviews are positive against 60% of EMFMeter's.

ISS Tracker ships an update weekly, EMFMeter every 2 months. The most recent releases landed on September 30, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | ISS Tracker | EMFMeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/iss-tracker-live-position/id6740058138/reviews)** | [4.7 (98 ratings)](https://appshunter.io/ios/app/emfmeter-radiation-reader/id6747639722/reviews) |
| Number of ratings | 5 | **98** |
| Positive reviews | **100.0% of reviews** | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 32 MB | 187 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lucent Enterprises Ltd.](https://appshunter.io/developer/1448644115) | [Neuralful Ai ltd](https://appshunter.io/developer/1707749156) |

## What reviewers say

### ISS Tracker

[App page](https://appshunter.io/ios/app/iss-tracker-live-position/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

**In-app purchases:** none


### EMFMeter

[App page](https://appshunter.io/ios/app/emfmeter-radiation-reader/id6747639722)

This tool transforms your smartphone into a real-time electromagnetic field scanner. It visualizes EMF readings, detects studs and metal objects behind walls, and alerts you to high EMF levels. You can also track EMF source direction and export data for analysis.

**Highlights:** Real-time EMF detection, Electromagnetic field visualization, Built-in stud finder, High EMF alerts, EMF source direction tracking, CSV data export, Session logging

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| week | $3.99 | per 7 days |
| yearlypro | $9.99 | per year |
| emfmeter | $19.99 | one-time |


## Frequently asked questions

### Is ISS Tracker free?

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

### Is EMFMeter free?

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

### Which has better reviews, ISS Tracker or EMFMeter?

ISS Tracker is rated higher. ISS Tracker averages 5.0 out of 5 from 5 ratings, while EMFMeter averages 4.7 from 98 ratings.

### Do ISS Tracker or EMFMeter have ads?

EMFMeter shows ads; ISS Tracker does not.

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

ISS Tracker ships an update weekly, and EMFMeter every 2 months. Most recently, ISS Tracker was updated on September 30, 2026 and EMFMeter on September 25, 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.*