# WaveBlock® EMF Meter vs Hidden Mark

The clearest difference is price: WaveBlock® EMF Meter at Free against Hidden Mark's $1.99. WaveBlock® EMF Meter also leads on in-app purchases (none vs 3). Hidden Mark's advantage is update cadence (daily vs every 2 weeks). On ads, device support and iOS requirement there is nothing between them.

WaveBlock® EMF Meter is free to download; Hidden Mark costs $1.99 up front. Hidden Mark sells 3 in-app purchases, starting at $1.99 per 7 days. WaveBlock® EMF Meter asks for nothing beyond the download.

WaveBlock® EMF Meter ships an update every 2 weeks, Hidden Mark daily. The most recent releases landed on September 20, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | WaveBlock® EMF Meter | Hidden Mark |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/waveblock-emf-meter/id6747926037/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | Free | — |
| Size | 23 MB | 1 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [WaveBlock LLC](https://appshunter.io/developer/1823438322) | [鸿斌 唐](https://appshunter.io/developer/1894765402) |

## What reviewers say

### WaveBlock® EMF Meter

[App page](https://appshunter.io/ios/app/waveblock-emf-meter/id6747926037)

This application transforms your phone into an EMF detector, allowing you to measure electromagnetic field levels in real-time. It helps identify potential radiation sources and understand your exposure from electronic devices and power lines.

**Highlights:** Real-time EMF detection, Accurate measurement with device sensors, Color-coded EMF zone indicators, EMF history log, Identify EMF hotspots, Create safer environments

**Features:** macOS Compatibility

**In-app purchases:** none


### Hidden Mark

[App page](https://appshunter.io/ios/app/hidden-marktransmission-tools/id6762620428)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $9.99 | per year |


## Frequently asked questions

### Is WaveBlock® EMF Meter free?

WaveBlock® EMF Meter is free to download, with no in-app purchases.

### Is Hidden Mark free?

Hidden Mark costs $1.99, and also offers in-app purchases.

### Do WaveBlock® EMF Meter or Hidden Mark have ads?

Neither WaveBlock® EMF Meter nor Hidden Mark shows ads.

### Which is updated more often, WaveBlock® EMF Meter or Hidden Mark?

WaveBlock® EMF Meter ships an update every 2 weeks, and Hidden Mark daily. Most recently, WaveBlock® EMF Meter was updated on September 20, 2026 and Hidden Mark on September 21, 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.*