# EMFMeter vs Contacts backup `

EMFMeter and Contacts backup ` both sit at 4.7 stars, but that hides the real split: 60% of EMFMeter's written reviews are positive against 0% of Contacts backup `'s. EMFMeter also leads on iOS requirement (15.6 vs 17.6). 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.

Both are free to download. EMFMeter 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 — 4.7 for EMFMeter against 4.7 for Contacts backup `. Both are backed by a comparable volume of ratings — 98 and 53 respectively. Written reviews are what separate them: 60% of EMFMeter's written reviews are positive against 0% of Contacts backup `'s.

EMFMeter ships an update every 2 months, Contacts backup ` every 3 weeks. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | EMFMeter | Contacts backup ` |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (98 ratings)](https://appshunter.io/ios/app/emfmeter-radiation-reader/id6747639722/reviews) | [4.7 (53 ratings)](https://appshunter.io/ios/app/contacts-backup/id6748363507/reviews) |
| Number of ratings | **98** | 53 |
| Positive reviews | **60.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 187 MB | 11 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Neuralful Ai ltd](https://appshunter.io/developer/1707749156) | [ENGINES STUDIO LAB](https://appshunter.io/developer/1686902830) |

## What reviewers say

### EMFMeter

[App page](https://appshunter.io/ios/app/emfmeter-radiation-reader/id6747639722)

This tool transforms your smartphone into a real-time electromagnetic field scanner. It visualizes EMF readings, detects studs and metal objects behind walls, and alerts you to high EMF levels. You can also track EMF source direction and export data for analysis.

**Highlights:** Real-time EMF detection, Electromagnetic field visualization, Built-in stud finder, High EMF alerts, EMF source direction tracking, CSV data export, Session logging

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| week | $3.99 | per 7 days |
| yearlypro | $9.99 | per year |
| emfmeter | $19.99 | one-time |


### Contacts backup `

[App page](https://appshunter.io/ios/app/contacts-backup/id6748363507)

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.

**Highlights:** 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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access for 1 week | $0.99 | per 7 days |
| Full access for 1 month | $3.99 | per month |
| Full access for 1 year | $19.99 | per year |
| Lifetime access | $24.99 | one-time |


## Frequently asked questions

### Is EMFMeter free?

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

### Is Contacts backup ` free?

Contacts backup ` is free to download, with in-app purchases available.

### Which has better reviews, EMFMeter or Contacts backup `?

EMFMeter and Contacts backup ` are both rated 4.7 out of 5 on the App Store, from 98 and 53 ratings respectively.

### Do EMFMeter or Contacts backup ` have ads?

EMFMeter shows ads; Contacts backup ` does not.

### Which is updated more often, EMFMeter or Contacts backup `?

EMFMeter ships an update every 2 months, and Contacts backup ` every 3 weeks. Most recently, EMFMeter was updated on September 21, 2026 and Contacts backup ` on September 24, 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.*