# Conversion vs Converter

The clearest difference is price: Converter at Free against Conversion's $0.99. Converter also leads on rating (4.8 vs 3.0) and review sentiment (100% vs 61%). Conversion's advantage is in-app purchases (none vs 6) and ads (none vs shown). On ratings volume and device support there is nothing between them.

Converter is free to download; Conversion costs $0.99 up front. Converter sells 6 in-app purchases, starting at $0.39 per 7 days. Conversion asks for nothing beyond the download.

Converter holds the better App Store score, 4.8 against 3.0. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews point the same way: 61% of Conversion's written reviews are positive against 100% of Converter's.

Conversion ships an update every 2 months, Converter weekly. The most recent releases landed on October 21, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Conversion | Converter |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.0 (5 ratings)](https://appshunter.io/ios/app/conversion-unit-converter/id286552073/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/converter-us-metric-units/id6479817204/reviews)** |
| Number of ratings | **5** | 4 |
| Positive reviews | 61.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 9 MB |
| Requires iOS | 26.0 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Duncan Campbell](https://appshunter.io/developer/286552076) | [ALEKSEI SKVORTSOV, IE](https://appshunter.io/developer/1736379359) |

## What reviewers say

### Conversion

[App page](https://appshunter.io/ios/app/conversion-unit-converter/id286552073)

This utility app provides instant conversions between a wide range of units, including metric, imperial, and currency. It features live exchange rates and supports 33 languages, all within a clean, clutter-free interface.

**Highlights:** Extensive unit categories (12 categories, 96 units), Live, offline-capable currency exchange rates, Supports 33 languages and regional number formats, Modern, clutter-free interface with fluid animations, Full VoiceOver and accessibility support, No ads, analytics, or tracking

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

**In-app purchases:** none


### Converter

[App page](https://appshunter.io/ios/app/converter-us-metric-units/id6479817204)

Easily convert between US customary and metric units for weight, length, volume, and temperature. The app features a simple interface with no learning curve and automatically saves your conversion history for quick review.

**Highlights:** Weight conversion (Lb-Kg, Oz-G), Length conversion (Cm-Inch, Mi-Km), Volume conversion (Fl Oz-Ml, Cups-L), Temperature conversion (F-C), Automatic conversion history, Zero learning curve interface

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $0.39 | per 7 days |
| Month | $0.49 | per month |
| Monthly | $0.49 | per month |
| Annually | $0.99 | per year |
| Year | $1.99 | per year |
| Forever | $1.99 | one-time |


## Frequently asked questions

### Is Conversion free?

Conversion costs $0.99, with no in-app purchases.

### Is Converter free?

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

### Which has better reviews, Conversion or Converter?

Converter is rated higher. Conversion averages 3.0 out of 5 from 5 ratings, while Converter averages 4.8 from 4 ratings.

### Do Conversion or Converter have ads?

Converter shows ads; Conversion does not.

### Which is updated more often, Conversion or Converter?

Conversion ships an update every 2 months, and Converter weekly. Most recently, Conversion was updated on October 21, 2026 and Converter on October 22, 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.*