# Pi vs Metal Detector・EMF Reader

The clearest difference is review sentiment: Metal Detector・EMF Reader at 100% against Pi's 50%. Metal Detector・EMF Reader also leads on price (Free vs $5.99) and rating (5.0 vs 3.0). Pi's advantage is in-app purchases (none vs 1) and update cadence (every 2 days vs weekly). On ratings volume, ads and device support there is nothing between them.

Metal Detector・EMF Reader is free to download; Pi costs $5.99 up front. Metal Detector・EMF Reader sells 1 one-off in-app purchase. Pi asks for nothing beyond the download.

Metal Detector・EMF Reader holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 50% of Pi's written reviews are positive against 100% of Metal Detector・EMF Reader's.

Pi ships an update every 2 days, Metal Detector・EMF Reader weekly. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Pi | Metal Detector・EMF Reader |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/pi-hole-switch-pro/id6743366196/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/metal-detectoremf-reader/id6749162622/reviews)** |
| Number of ratings | 2 | 2 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Paid | **Free** |
| Size | 28 MB | 18 MB |
| Requires iOS | 26.0 | **16.6** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Soomaa Strategies Ltd.](https://appshunter.io/developer/1800486127) | [Yash Mandhyan](https://appshunter.io/developer/1856960217) |

## What reviewers say

### Pi

[App page](https://appshunter.io/ios/app/pi-hole-switch-pro/id6743366196)

Effortlessly manage multiple Pi-hole instances for DNS ad control. This app allows you to enable/disable blocking, view query logs, and manage domains and lists directly from your iOS device.

**Highlights:** Control Center Widget, Manage up to 10 Pi-holes, Live DNS Query Logs, Domain and Gravity List Management, Time-Based Blocking Control, Real-Time Status Updates

**Features:** macOS Compatibility

**In-app purchases:** none


### Metal Detector・EMF Reader

[App page](https://appshunter.io/ios/app/metal-detectoremf-reader/id6749162622)

Transform your iPhone into a versatile tool for detecting metal objects, locating wall studs, and measuring EMF levels. Utilize the device's built-in magnetometer for real-time insights into magnetic fields and signal strength, perfect for various DIY and utility tasks.

**Highlights:** Detect nearby metal objects, Find wall studs, screws, nails, pipes, Real-time magnetic field readings, Live EMF meter and graph visualization, Signal confidence indicator, Axis-based directional detection

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $1.99 | one-time |


## Frequently asked questions

### Is Pi free?

Pi costs $5.99, with no in-app purchases.

### Is Metal Detector・EMF Reader free?

Metal Detector・EMF Reader is free to download, with in-app purchases available.

### Which has better reviews, Pi or Metal Detector・EMF Reader?

Metal Detector・EMF Reader is rated higher. Pi averages 3.0 out of 5 from 2 ratings, while Metal Detector・EMF Reader averages 5.0 from 2 ratings.

### Do Pi or Metal Detector・EMF Reader have ads?

Neither Pi nor Metal Detector・EMF Reader shows ads.

### Which is updated more often, Pi or Metal Detector・EMF Reader?

Pi ships an update every 2 days, and Metal Detector・EMF Reader weekly. Most recently, Pi was updated on October 3, 2026 and Metal Detector・EMF Reader on October 12, 2026.

---

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