# Attenuator vs Magnetic Detector, Stud Finder

The clearest difference is ads: Attenuator at none against Magnetic Detector, Stud Finder's shown. Attenuator also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 90%). Magnetic Detector, Stud Finder's advantage is ratings volume (444 vs 8) and update cadence (every 2 months vs every 7 months). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. Attenuator sells 1 one-off in-app purchase and Magnetic Detector, Stud Finder sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Attenuator holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Magnetic Detector, Stud Finder has 444 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 100% of Attenuator's written reviews are positive against 90% of Magnetic Detector, Stud Finder's.

Attenuator ships an update every 7 months, Magnetic Detector, Stud Finder every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Attenuator | Magnetic Detector, Stud Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/attenuator/id367216554/reviews)** | [4.6 (444 ratings)](https://appshunter.io/ios/app/magnetic-detector-stud-finder/id1403751803/reviews) |
| Number of ratings | 8 | **444** |
| Positive reviews | **100.0% of reviews** | 90.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 1 MB | 30 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Tim E. Burrow](https://appshunter.io/developer/367216557) | [Jose Bello](https://appshunter.io/developer/1013437387) |

## What reviewers say

### Attenuator

[App page](https://appshunter.io/ios/app/attenuator/id367216554)

Calculate output voltage, power, and attenuation based on input values and dB of attenuation. Features NMR-specific calculations for pulses and measures local magnetic fields and barometric pressure.

**Highlights:** Calculate output voltage and power, Specify input voltage (Vpp or Vrms), Calculate attenuation in dB, NMR pulse calculations, Measure local magnetic field, Display barometric pressure

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all ads | $1.99 | one-time |


### Magnetic Detector, Stud Finder

[App page](https://appshunter.io/ios/app/magnetic-detector-stud-finder/id1403751803)

This app uses your device's magnetometer to detect magnetic and electromagnetic fields. It helps locate metal objects, hidden wires, pipes, and even wood studs behind walls. Get real-time readings and alerts to explore your surroundings.

**Highlights:** Detects magnetic and EMF fields, Locates metal objects, wires, and pipes, Finds hidden wood studs behind walls, Real-time magnetic field intensity readings (μT & mG), Active detection beep alerts, Automatic storage of time and measurements

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Full Access | $4.99 | per 7 days |
| Remove Ads - Magnetic Detector | $2.99 | one-time |
| Unlock all - Premium & Warning Beep | $4.99 | one-time |
| Lifetime Full Access | $12.99 | one-time |

**What reviewers like**

- ⭐ Accurate magnetic detection
- 👍 Easy to use and intuitive
- 🔍 Helpful for finding hidden metal objects
- 🔧 Useful for troubleshooting mechanical issues (e.g., magnetized watches)

**What reviewers complain about**

- 💰 Ads can be intrusive in free version
- 🔒 Concerns about privacy and data collection
- 🔋 Potential impact on device battery life

**Reported bugs**

- Readings sometimes inconsistent or stop at certain thresholds
- Compatibility issues with some devices

**Requested features**

- Add support for measuring electric fields
- Improve accuracy and sensitivity
- Provide more detailed readings and analysis


## Frequently asked questions

### Is Attenuator free?

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

### Is Magnetic Detector, Stud Finder free?

Magnetic Detector, Stud Finder is free to download, with in-app purchases available.

### Which has better reviews, Attenuator or Magnetic Detector, Stud Finder?

Attenuator is rated higher. Attenuator averages 5.0 out of 5 from 8 ratings, while Magnetic Detector, Stud Finder averages 4.6 from 444 ratings.

### Do Attenuator or Magnetic Detector, Stud Finder have ads?

Magnetic Detector, Stud Finder shows ads; Attenuator does not.

### Which is updated more often, Attenuator or Magnetic Detector, Stud Finder?

Attenuator ships an update every 7 months, and Magnetic Detector, Stud Finder every 2 months. Most recently, Attenuator was updated on November 1, 2026 and Magnetic Detector, Stud Finder on November 6, 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.*