# RANVOO vs Perimeter

The clearest difference is update cadence: Perimeter at every 2 days against RANVOO's every 3 weeks. RANVOO's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

RANVOO ships an update every 3 weeks, Perimeter every 2 days. Both last shipped on October 8, 2026.

## The numbers

| Metric | RANVOO | Perimeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/ranvoo/id6447061292/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 91 MB | 7 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Shenzhen Lanhe Technology Co., Ltd.](https://appshunter.io/developer/1612410355) | [Classy Methods](https://appshunter.io/developer/991628608) |

## What reviewers say

### RANVOO

[App page](https://appshunter.io/ios/app/ranvoo/id6447061292)

Control and manage various smart wearable devices, including neck fans, neck air conditioners, and heaters. Offers a convenient way to adjust settings and monitor your devices.

**Highlights:** Control neck fans, Manage neck air conditioners, Operate heaters, Device settings adjustment, Device monitoring

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

**In-app purchases:** none


### Perimeter

[App page](https://appshunter.io/ios/app/perimeter-privacy-scanner/id6794748751)

**In-app purchases:** none


## Frequently asked questions

### Is RANVOO free?

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

### Is Perimeter free?

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

### Do RANVOO or Perimeter have ads?

Neither RANVOO nor Perimeter shows ads.

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

RANVOO ships an update every 3 weeks, and Perimeter every 2 days. Most recently, RANVOO was updated on October 8, 2026 and Perimeter on October 8, 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.*