# VigilZone Pro vs Unit Converter

The clearest difference is update cadence: VigilZone Pro at every 5 weeks against Unit Converter's every 3 months. VigilZone Pro also leads on iOS requirement (11.0 vs 15.0). 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.

VigilZone Pro ships an update every 5 weeks, Unit Converter every 3 months. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | VigilZone Pro | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unit-converter-convertit/id6766193826/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Size | 21 MB | 44 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vigil Sarl](https://appshunter.io/developer/1213490913) | [Gunawan Santoso](https://appshunter.io/developer/1843786072) |

## What reviewers say

### VigilZone Pro

[App page](https://appshunter.io/ios/app/vigilzone-pro/id1516515423)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-convertit/id6766193826)

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

**In-app purchases:** none


## Frequently asked questions

### Is VigilZone Pro free?

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

### Is Unit Converter free?

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

### Do VigilZone Pro or Unit Converter have ads?

Neither VigilZone Pro nor Unit Converter shows ads.

### Which is updated more often, VigilZone Pro or Unit Converter?

VigilZone Pro ships an update every 5 weeks, and Unit Converter every 3 months. Most recently, VigilZone Pro was updated on October 6, 2026 and Unit Converter 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.*