# Sentry Motion Detector Camera vs PhoMeter

The clearest difference is update cadence: PhoMeter at every 4 days against Sentry Motion Detector Camera's fortnightly. Sentry Motion Detector Camera's advantage is iOS requirement (18.0 vs 26.4). On price, ads, in-app purchases and device support there is nothing between them.

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

Sentry Motion Detector Camera ships an update fortnightly, PhoMeter every 4 days. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Sentry Motion Detector Camera | PhoMeter |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free | — |
| Size | 0 MB | 7 MB |
| Requires iOS | **18.0** | 26.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BigBalli Consulting llc](https://appshunter.io/developer/363765325) | [Andrea Biancat](https://appshunter.io/developer/1593009801) |

## What reviewers say

### Sentry Motion Detector Camera

[App page](https://appshunter.io/ios/app/sentry-motion-detector-camera/id6740923419)

Transform an old phone into a dark-optimized motion-triggered security camera. It records clips when movement is detected and saves them directly to your device's photo library, offering a private and offline monitoring solution.

**Highlights:** Motion-triggered recording, Night vision capabilities, Records to photo library, Offline operation, No account or cloud needed, Screen stays dark during use

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

**In-app purchases:** none


### PhoMeter

[App page](https://appshunter.io/ios/app/phometer/id6766316130)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sentry Motion Detector Camera free?

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

### Is PhoMeter free?

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

### Do Sentry Motion Detector Camera or PhoMeter have ads?

Neither Sentry Motion Detector Camera nor PhoMeter shows ads.

### Which is updated more often, Sentry Motion Detector Camera or PhoMeter?

Sentry Motion Detector Camera ships an update fortnightly, and PhoMeter every 4 days. Most recently, Sentry Motion Detector Camera was updated on October 14, 2026 and PhoMeter on September 30, 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.*