# N9 vs Hidden Device

The clearest difference is rating: Hidden Device at 4.8 against N9's 2.3. Hidden Device also leads on update cadence (daily vs every 3 weeks). N9's advantage is in-app purchases (none vs 6) and ads (none vs shown). On price, ratings volume and device support there is nothing between them.

Both are free to download. Hidden Device sells 6 in-app purchases, starting at $8.99 per 7 days. N9 asks for nothing beyond the download.

Hidden Device holds the better App Store score, 4.8 against 2.3. Both are backed by a comparable volume of ratings — 3 and 6 respectively.

N9 ships an update every 3 weeks, Hidden Device daily. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | N9 | Hidden Device |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/n9/id1337449449/reviews) | **[4.8 (6 ratings)](https://appshunter.io/ios/app/hidden-device-finder-and-detect/id6745089044/reviews)** |
| Number of ratings | 3 | **6** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 83 MB | 19 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [传林 方](https://appshunter.io/developer/699727053) | [Kelley Dalton](https://appshunter.io/developer/1810656191) |

## What reviewers say

### N9

[App page](https://appshunter.io/ios/app/n9/id1337449449)

This utility app alerts you to vehicle presence using infrared detectors. Customize alarm volume and choose from 16 distinct sounds. It supports up to 12 infrared sensors across six zones.

**Highlights:** Infrared vehicle detection, Adjustable alarm volume, 16 alarm sound options, Supports 12 infrared sensors, Six detection zones

**Features:** macOS Compatibility

**In-app purchases:** none


### Hidden Device

[App page](https://appshunter.io/ios/app/hidden-device-finder-and-detect/id6745089044)

Detect unknown devices on your Wi-Fi and Bluetooth networks. Scan for hidden electronics using infrared and magnetic field detection to safeguard your privacy. Offers multiple detection methods for comprehensive security.

**Highlights:** Wi-Fi and Bluetooth network scanning, Detect unknown connected devices, Infrared camera scanning, Magnetic field detection, Privacy protection tools

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| hiddenDeviceWeekly | $8.99 | per 7 days |
| Hidden Device: Finder & Detect | $8.99 | per 7 days |
| hiddenDeviceMonthly | $14.99 | per month |
| hiddenDeviceMonthlyTrial | $15.99 | per month |
| hiddenDeviceYearly | $83.99 | per year |
| hiddenDeviceYearlyTrial | $99.99 | per year |


## Frequently asked questions

### Is N9 free?

N9 is free to download, with no in-app purchases.

### Is Hidden Device free?

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

### Which has better reviews, N9 or Hidden Device?

Hidden Device is rated higher. N9 averages 2.3 out of 5 from 3 ratings, while Hidden Device averages 4.8 from 6 ratings.

### Do N9 or Hidden Device have ads?

Hidden Device shows ads; N9 does not.

### Which is updated more often, N9 or Hidden Device?

N9 ships an update every 3 weeks, and Hidden Device daily. Most recently, N9 was updated on October 16, 2026 and Hidden Device 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.*