Comparison

Pi vs Metal Detector・EMF Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pi

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
Read full description

Pi-hole Switch - Effortless DNS Ad Control for Your Pi-hole Networks Version 2.0 is now here with live query logs and domain management! Compatible with the newest version 6.0 of Pi-hole and up only. Your feedback is wanted! Kudos and compliments? Need a feature added? Contact us! - refer to About Page in app. Take full control of your Pi-hole instances with Pi-hole Switch, the most convenient way to manage DNS blocking on your network! Whether you’re an advanced user or just want a simple way to manage your privacy settings, Pi-hole Switch makes it easier than ever to enable/disable DNS blocking across multiple Pi-hole instances right from your iOS device. Key Features: • NEW - Control Center Widget. Fully customizable with Pi-hole selection and disable time. Full syncronization of blocking status with main app using server push notifications. • Manage up 10 Pi-holes - no additional fees or subscriptions. Life time updates. • Live Activities with server based push updates. • DNS Query Logs - Retrieve 100, 200 or 500 of the most recent queries. Or switch to Live logging - fully integrated for a seamless viewing experience. • Domain Management - Add/Delete, Enable/Disable, View and edit Groups. • View, enable/disable, delete and add Gravity Block/Allow lists. One click update/refresh of all Pi-hole Gravity lists directly in the navigation bar. • Combined view lists for all Pi-holes in both blocked/allowed domain lists and Gravity Ad Lists. Easily find and manage common items between Pi-holes. • Manage Groups across Pi-holes. Unique combined view allows you to easily add, find and edit across your Pi-holes. • Enabled/Disabled Indicators for individual Domains and Gravity Ad Lists. Easily find and enabled/disable. • Bottom Summary Bar for Queries, Domain and Gravity List views. Quickly see total number of blocked, allowed, disabled items and other metrics. • Create your own custom disable times. • Widgets to quickly disable Pi-hole blocking. • Activate/Deactivate Pi-holes without having to delete them from the app. • Seamless Pi-hole Management: Instantly connect and manage multiple Pi-hole instances with just a few taps. • Time-Based Blocking Control: Schedule and enable DNS blocking or temporarily disable it for a set amount of time, directly from the app. • View important metrics such as top permitted and blocked domains. • User-Friendly Interface: Enjoy a sleek, simple design that’s easy to navigate, even for new users. • Real-Time Status Updates: Get live feedback and updates on the status of each Pi-hole instance, with clear indicators of whether your instance has blocking enabled, disabled or is offline. • Powerful Integration: Effortlessly retrieve and manage API sessions for all your Pi-hole instances. • Sleek, Minimalist Design: Clean and modern UI with intuitive controls. Note: To use this app, one to ten instances of Pi-hole Version 6.0 or up are needed. Pi-hole Switch is a third party application which uses the Pi-hole API and is in no way affiliated with Pi-hole. Find out more about Pi-hole at https://pi-hole.net/. Please refer to support page for FAQs for detailed directions on adding a Pi-hole to the app.

About

Metal Detector・EMF Reader

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
Read full description

Turn your iPhone into a powerful Metal Detector, Stud Finder & EMF Reader using the built-in magnetometer sensor. Metal Detector helps you locate nearby metal objects, detect magnetic fields, analyze EMF levels, and visualize live magnetometer readings directly from your device. Whether you’re searching for hidden metal, locating wall studs, checking electronics for EMF activity, or exploring magnetic fields around you, this app gives you real-time precision and easy-to-read insights. Perfect for DIY projects, construction work, home improvement, electronics testing, hobby exploration, and everyday utility use. FEATURES • Detect nearby metal objects using your iPhone’s magnetometer • Find wall studs, screws, nails, pipes, and hidden metallic objects • Real-time magnetic field readings in microtesla (µT) • Live EMF meter and magnetometer graph visualization • Signal confidence indicator for stronger detections • Axis-based directional detection system • Smooth real-time graphing of magnetic field activity • Minimal, clean, and professional interface • Fast and lightweight performance • Works instantly with supported iPhones HOW IT WORKS The app uses your iPhone’s built-in magnetometer sensor to measure magnetic field strength. When metal or magnetic objects are nearby, the magnetic field changes and the app displays the variation in real time. You can use Metal Detector to: • Locate metal studs in walls • Find hidden screws or nails • Detect magnetic interference • Measure EMF activity around electronics • Explore magnets and magnetic fields • Scan objects for metallic presence GREAT FOR • DIY & home improvement • Construction & renovation • Electricians & technicians • Hobbyists & explorers • Educational science experiments • Everyday utility detection IMPORTANT NOTES • Accuracy depends on your iPhone’s magnetometer sensor • Best results occur with ferromagnetic metals like iron and steel • Does not work for non ferrous metal like Aluminum, gold, silver • Thick walls or heavy interference can affect readings • Remove magnetic phone accessories for improved accuracy Download Metal Detector today and transform your iPhone into a smart magnetic field scanner, EMF reader, and stud finder tool. Terms of service - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Pi4 screens
Metal Detector・EMF Reader3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 3 level
Pi versus Metal Detector・EMF Reader: the parameters behind the verdict, then further details
ParameterPiMetal Detector・EMF Reader
Price$5.99Free — better
Rating3.0 (2 ratings)5.0 (2 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings22
Update frequencyEvery 2 days — betterWeekly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhoneiPhone
Requires iOS26.016.6 — better
Further details — not scored
Size28 MB18 MB
Age rating4+4+
DeveloperSoomaa Strategies Ltd.Yash Mandhyan

Customer experience

Pi

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Metal Detector・EMF Reader

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Pi

No in-app purchases

1 purchases

Metal Detector・EMF Reader

One-time1
  • Lifetime Access$1.99

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.

Other comparisons