# Sentry vs Hidden Device

The clearest difference is in-app purchases: Sentry at none against Hidden Device's 6. Sentry also leads on ads (none vs shown) and device support (3 vs 1). Hidden Device's advantage is update cadence (daily vs every 5 days). On price and iOS requirement there is nothing between them.

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

Sentry ships an update every 5 days, Hidden Device daily. Both last shipped on October 24, 2026.

## The numbers

| Metric | Sentry | Hidden Device |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (6 ratings)](https://appshunter.io/ios/app/hidden-device-finder-and-detect/id6745089044/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 48 MB | 19 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [General Retailing Technologies](https://appshunter.io/developer/1484751650) | [Kelley Dalton](https://appshunter.io/developer/1810656191) |

## What reviewers say

### Sentry

[App page](https://appshunter.io/ios/app/sentry/id1484751651)

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

**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 Sentry free?

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

### Is Hidden Device free?

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

### Do Sentry or Hidden Device have ads?

Hidden Device shows ads; Sentry does not.

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

Sentry ships an update every 5 days, and Hidden Device daily. Most recently, Sentry was updated on October 24, 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.*