# Perimeter vs YTool

The clearest difference is update cadence: Perimeter at every 3 weeks against YTool's every 3 months. Perimeter also leads on iOS requirement (11.0 vs 13.0). 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.

Perimeter ships an update every 3 weeks, YTool every 3 months. The most recent releases landed on October 7, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Perimeter | YTool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/perimeter-theft-deterrence/id1572482501/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 54 MB | 61 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [PERIMETER AI INC.](https://appshunter.io/developer/1572482503) | [智微 毛](https://appshunter.io/developer/1142573678) |

## What reviewers say

### Perimeter

[App page](https://appshunter.io/ios/app/perimeter-theft-deterrence/id1572482501)

This AI-powered security app detects potential threats before they occur. It uses unique lights and sounds to warn individuals and deter crime before it happens.

**Highlights:** AI threat detection, Proactive crime deterrence, Neighbor Safe™ lights, Audible warnings, Driveway monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### YTool

[App page](https://appshunter.io/ios/app/ytool/id6478134322)

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

**In-app purchases:** none


## Frequently asked questions

### Is Perimeter free?

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

### Is YTool free?

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

### Do Perimeter or YTool have ads?

Neither Perimeter nor YTool shows ads.

### Which is updated more often, Perimeter or YTool?

Perimeter ships an update every 3 weeks, and YTool every 3 months. Most recently, Perimeter was updated on October 7, 2026 and YTool on September 25, 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.*