# VJHumidity vs WaveBlock® EMF Meter

The clearest difference is iOS requirement: VJHumidity at 12.4 against WaveBlock® EMF Meter's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

VJHumidity ships an update every 8 days, WaveBlock® EMF Meter every 2 weeks. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | VJHumidity | WaveBlock® EMF Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/waveblock-emf-meter/id6747926037/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | — | Free |
| Size | 13 MB | 23 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CHANG SHIN VIETNAM COMPANY LTD](https://appshunter.io/developer/1603354571) | [WaveBlock LLC](https://appshunter.io/developer/1823438322) |

## What reviewers say

### VJHumidity

[App page](https://appshunter.io/ios/app/vjhumidity/id1671924199)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is VJHumidity free?

VJHumidity is free to download, with no in-app purchases.

### Is WaveBlock® EMF Meter free?

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

### Do VJHumidity or WaveBlock® EMF Meter have ads?

Neither VJHumidity nor WaveBlock® EMF Meter shows ads.

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

VJHumidity ships an update every 8 days, and WaveBlock® EMF Meter every 2 weeks. Most recently, VJHumidity was updated on October 5, 2026 and WaveBlock® EMF Meter on October 7, 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.*