EMF Detector vs Contacts backup `
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EMF Detector
Transform your iPhone into an EMF detector and gauss meter. Measure magnetic fields in real-time, with options for ghost hunting, metal detection, and stud finding. Export your session logs for detailed analysis.
- Live EMF detection with peak hold
- Switchable units (µT, mG, Gauss)
- Zero/calibrate function
- Ghost hunt mode with audio/haptics
- Metal and stud finder
- Session logging with CSV/PDF export
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Turn your iPhone into an EMF detector and gauss meter. EMF Detector reads the built-in magnetometer and shows live magnetic field in microtesla, milligauss, or Gauss — the same units a handheld meter uses. This app measures magnetic fields. It does not measure Wi‑Fi, 5G, or ionizing radiation. What you can do • Live EMF detector with peak hold and average • Switch units: µT, mG, Gauss • Zero / calibrate to ignore Earth’s field and hunt nearby sources • Ghost hunt mode: audio and haptics on magnetic spikes (used by investigators as a starting point, not a spirit detector) • Metal and stud finder: sweep a wall to find studs, pipes and wiring • XYZ charts and field direction compass • Session log with CSV and PDF export Ghost hunt & metal Walk slowly. Zero the meter, then sweep. Spikes mean a changing magnetic field — speakers, transformers, studs, or wiring. Audio maps spike strength so you can hunt without watching the screen. Pro removes ads and unlocks direction, full history, high-EMF alerts, and PDF export. Support: support@neuralfulai.com Terms: https://neuralfulai.com/terms-of-use/ Privacy: https://neuralfulai.com/privacy-policy-apps/
Contacts backup `
Safeguard your address book with this straightforward utility. Easily back up, restore, and transfer contacts in various formats, even offline. Schedule regular backups and organize them by date for peace of mind.
- One-tap contact backup
- Restore from previous backups
- Export in VCF or CSV
- Share backups easily
- Smart backup reminders
- Organize backups by date
- Offline functionality
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Never lose a contact again with Contact Keeper – your simple, reliable contact backup and transfer solution. Easily back up, restore, and transfer your contacts in just a few taps. Whether you're switching devices, upgrading phones, or just staying safe, Contact Keeper has you covered. Key Features: • One-tap contact backup to secure your address book • Restore contacts from previous backups anytime • Export contacts in VCF or CSV formats and more • Share backups easily via email, AirDrop, or other apps • Set smart reminders to back up regularly • Organize backups by date • Works offline — no internet required • Unlimited backups and restores • Clean, modern interface with Dark Mode support To unlock unlimited access, you may need to purchase a subscription or in-app purchase. Privacy Policy: enginesstudio.tech/privacy Support & Terms: enginesstudio.tech/support/contact
Screenshots
Verdict
EMF Detector and Contacts backup ` both sit at 4.6 stars, but that hides the real split: 60% of EMF Detector's written reviews are positive against 0% of Contacts backup `'s. Contacts backup `'s advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price, rating, ratings volume and in-app purchases 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
Both are free to download. EMF Detector sells 3 in-app purchases, starting at $3.99 per 7 days and Contacts backup ` sells 4 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.6 for EMF Detector against 4.7 for Contacts backup `. Both are backed by a comparable volume of ratings — 108 and 53 respectively. Written reviews are what separate them: 60% of EMF Detector's written reviews are positive against 0% of Contacts backup `'s.
EMF Detector ships an update every 2 months, Contacts backup ` every 3 weeks. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.
| Parameter | EMF Detector | Contacts backup ` |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (108 ratings) | 4.7 (53 ratings) — better |
| Positive reviews | 60.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 108 — better | 53 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, Apple Watch — better | iPhone |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 191 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Neuralful Ai ltd | ENGINES STUDIO LAB |
Customer experience
EMF Detector
Contacts backup `
In-app purchases
EMF Detector
- week$3.997 Days
- yearlypro3 Days trial$14.991 Year
- emfmeter$29.99
Contacts backup `
- Full access for 1 week$0.997 Days
- Full access for 1 month$3.991 Month
- Full access for 1 year$19.991 Year
- Lifetime access$24.99
Questions
Is EMF Detector free?
Is Contacts backup ` free?
Which has better reviews, EMF Detector or Contacts backup `?
Do EMF Detector or Contacts backup ` have ads?
Which is updated more often, EMF Detector or Contacts backup `?
Other comparisons
