# Height Converter vs Unrival

The clearest difference is in-app purchases: Unrival at none against Height Converter's 3. Unrival also leads on update cadence (every 6 weeks vs every 69 months). Height Converter's advantage is iOS requirement (13.4 vs 15.5). On price, ads and device support there is nothing between them.

Both are free to download. Height Converter sells 3 in-app purchases, starting at $0.99 per 7 days. Unrival asks for nothing beyond the download.

Height Converter ships an update every 69 months, Unrival every 6 weeks. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Height Converter | Unrival |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (25 ratings)](https://appshunter.io/ios/app/height-converter/id1535443429/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 69 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Size | 2 MB | 42 MB |
| Requires iOS | **13.4** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [Chauvet Professional](https://appshunter.io/developer/1364133122) |

## What reviewers say

### Height Converter

[App page](https://appshunter.io/ios/app/height-converter/id1535443429)

Easily convert heights between various units including feet, centimeters, inches, meters, and millimeters. This tool is designed for quick and accurate conversions for professionals and travelers alike.

**Highlights:** Converts between Feet, Centimetre, Inch, Meter, Millimetre, Fast and accurate conversions, Simple user interface, Useful for builders and travelers

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per 7 days |
| Premium Access | $1.99 | per month |
| Premium Access | $5.99 | per year |


### Unrival

[App page](https://appshunter.io/ios/app/unrival/id6748585954)

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

**In-app purchases:** none


## Frequently asked questions

### Is Height Converter free?

Height Converter is free to download, with in-app purchases available.

### Is Unrival free?

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

### Do Height Converter or Unrival have ads?

Neither Height Converter nor Unrival shows ads.

### Which is updated more often, Height Converter or Unrival?

Height Converter ships an update every 69 months, and Unrival every 6 weeks. Most recently, Height Converter was updated on October 24, 2026 and Unrival on October 16, 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.*