# RF Tools vs EMF Field Detector RF Scanner

The clearest difference is price: RF Tools at Free against EMF Field Detector RF Scanner's $4.99. RF Tools also leads on in-app purchases (none vs 2) and ads (none vs shown). EMF Field Detector RF Scanner's advantage is rating (4.5 vs 3.0) and update cadence (every 3 weeks vs every 14 months). On device support and iOS requirement there is nothing between them.

RF Tools is free to download; EMF Field Detector RF Scanner costs $4.99 up front. EMF Field Detector RF Scanner sells 2 one-off in-app purchases. RF Tools asks for nothing beyond the download.

EMF Field Detector RF Scanner holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: EMF Field Detector RF Scanner has 5.5K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 60% of RF Tools's written reviews are positive against 84% of EMF Field Detector RF Scanner's.

RF Tools ships an update every 14 months, EMF Field Detector RF Scanner every 3 weeks. The most recent releases landed on June 9, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | RF Tools | EMF Field Detector RF Scanner |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [3.0 (3 ratings)](https://appshunter.io/ios/app/rf-tools/id525678686/reviews) | **[4.5 (5.5K ratings)](https://appshunter.io/ios/app/emf-field-detector-rf-scanner/id836603095/reviews)** |
| Number of ratings | 3 | **5.5K** |
| Positive reviews | 60.0% of reviews | **84.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#150** |
| Size | 12 MB | 56 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HUBER + SUHNER AG](https://appshunter.io/developer/525678889) | [Jorge Gregorio Martin Bello](https://appshunter.io/developer/567988393) |

## What reviewers say

### RF Tools

[App page](https://appshunter.io/ios/app/rf-tools/id525678686)

This utility app helps engineers and students calculate and convert RF-specific values like impedance, wavelength, and return loss. It also includes a calculator for comparing RF cables and assemblies, and provides access to product catalogs and branch information.

**Highlights:** RF value conversion (impedance, wavelength, return loss), RF assembly calculator, dB calculator, Product catalog access, Branch locator

**Features:** macOS Compatibility

**In-app purchases:** none


### EMF Field Detector RF Scanner

[App page](https://appshunter.io/ios/app/emf-field-detector-rf-scanner/id836603095)

**Currently charting:** #150 Top Paid · Utilities (US App Store)

Detect electromagnetic fields (EMF) using your device's sensors. Get alerted to high magnetic fields and potential radiation sources in your home. Useful for identifying hidden emitters and understanding your environment.

**Highlights:** Detects electromagnetic fields (EMF), Warns of high magnetic fields with beeps, Measures magnetic force on three axes, Records readings with time and date stamps, Stores up to 100 records, Sends measurements via email

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Pack | $4.99 | one-time |
| Special Offer | $4.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate readings
- 💡 Useful for detecting EMF
- 🔍 Helps identify problem areas
- 📊 Provides clear data and insights

**What reviewers complain about**

- 🐛 Occasional glitches or inconsistent readings
- 🔋 Concerns about phone's own EMF emissions
- 💰 Premium version required for full functionality

**Reported bugs**

- App freezes or stops working after updates
- Readings not always accurate or reliable

**Requested features**

- Ability to export data
- More detailed explanations and guidance
- Compatibility with other EMF measurement devices


## Frequently asked questions

### Is RF Tools free?

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

### Is EMF Field Detector RF Scanner free?

EMF Field Detector RF Scanner costs $4.99, and also offers in-app purchases.

### Which has better reviews, RF Tools or EMF Field Detector RF Scanner?

EMF Field Detector RF Scanner is rated higher. RF Tools averages 3.0 out of 5 from 3 ratings, while EMF Field Detector RF Scanner averages 4.5 from 5.5K ratings.

### Do RF Tools or EMF Field Detector RF Scanner have ads?

EMF Field Detector RF Scanner shows ads; RF Tools does not.

### Which is updated more often, RF Tools or EMF Field Detector RF Scanner?

RF Tools ships an update every 14 months, and EMF Field Detector RF Scanner every 3 weeks. Most recently, RF Tools was updated on June 9, 2026 and EMF Field Detector RF Scanner on September 29, 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.*