# Noise Diary vs Hidden Camera Detector

The clearest difference is price: Hidden Camera Detector at Free against Noise Diary's $0.99. Hidden Camera Detector also leads on update cadence (every 3 days vs weekly). Noise Diary's advantage is in-app purchases (none vs 5) and iOS requirement (13.0 vs 18.1). On ads and device support there is nothing between them.

Hidden Camera Detector is free to download; Noise Diary costs $0.99 up front. Hidden Camera Detector sells 5 in-app purchases, starting at $3.99 per 7 days. Noise Diary asks for nothing beyond the download.

Noise Diary ships an update weekly, Hidden Camera Detector every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Noise Diary | Hidden Camera Detector |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/hidden-camera-detector-scan/id6756610396/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Free |
| Size | 25 MB | 63 MB |
| Requires iOS | **13.0** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Lamb](https://appshunter.io/developer/1484679049) | [Artur Karachev](https://appshunter.io/developer/1678382844) |

## What reviewers say

### Noise Diary

[App page](https://appshunter.io/ios/app/noise-diary/id6747617668)

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

**In-app purchases:** none


### Hidden Camera Detector

[App page](https://appshunter.io/ios/app/hidden-camera-detector-scan/id6756610396)

This app guides you through inspecting unfamiliar spaces for hidden cameras using visual lens detection, nearby device scanning, and magnetic field readings. It provides structured checklists and on-device reports to help you make informed judgments about suspicious devices.

**Highlights:** Visual lens detection with multiple filters, Nearby device scanning (Bluetooth & Wi-Fi), Magnetic field scanner, Guided inspection checklists, On-device scan reports, Training and tips for inspection

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (1 Week) | $3.99 | per 7 days |
| Premium (1 Week) | $3.99 | per 7 days |
| Premium (1 Year) | $9.99 | per year |
| Premium (1 Year) | $19.99 | per year |
| Premium (1 Year) | $19.99 | per year |


## Frequently asked questions

### Is Noise Diary free?

Noise Diary costs $0.99, with no in-app purchases.

### Is Hidden Camera Detector free?

Hidden Camera Detector is free to download, with in-app purchases available.

### Do Noise Diary or Hidden Camera Detector have ads?

Neither Noise Diary nor Hidden Camera Detector shows ads.

### Which is updated more often, Noise Diary or Hidden Camera Detector?

Noise Diary ships an update weekly, and Hidden Camera Detector every 3 days. Most recently, Noise Diary was updated on October 24, 2026 and Hidden Camera Detector on October 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.*