# Unit Converter vs Respiratory System

The clearest difference is in-app purchases: Respiratory System at none against Unit Converter's 2. Respiratory System also leads on ads (none vs shown) and iOS requirement (12.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. Unit Converter sells 2 in-app purchases, starting at $1.99 per year. Respiratory System asks for nothing beyond the download.

## The numbers

| Metric | Unit Converter | Respiratory System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (10 ratings)](https://appshunter.io/ios/app/unit-converter-measurements/id1084218646/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 63 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Zbigniew Osada](https://appshunter.io/developer/911447642) | [GPS FOR PRINTING, PUBLISHING AND DISTRIBUTION SAE](https://appshunter.io/developer/1679738219) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-measurements/id1084218646)

This tool helps you quickly and accurately convert between various measurement units for length, temperature, data, and more. Its user-friendly interface makes complex conversions simple for engineers, students, and daily use.

**Highlights:** Converts length, temperature, and data transmission rates, Supports pressure, time, frequency, and energy units, Includes density, inductance, and magnetic induction, Handles mass, power, volume, and area, Calculates speed and temperature, User-friendly interface

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Premium | $1.99 | per year |
| Full Version | $5.99 | one-time |


### Respiratory System

[App page](https://appshunter.io/ios/app/respiratory-system-gps/id6474309532)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter free?

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

### Is Respiratory System free?

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

### Do Unit Converter or Respiratory System have ads?

Unit Converter shows ads; Respiratory System does not.

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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.*