# The Conversion App vs Uniter

The clearest difference is rating: Uniter at 4.7 against The Conversion App's 4.1. Uniter also leads on update cadence (every 4 days vs every 5 weeks) and review sentiment (67% vs 45%). The Conversion App's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 26.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Uniter sells 3 in-app purchases, starting at $3.99 per month. The Conversion App asks for nothing beyond the download.

Uniter holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 61 and 74 respectively. Written reviews point the same way: 45% of The Conversion App's written reviews are positive against 67% of Uniter's.

The Conversion App ships an update every 5 weeks, Uniter every 4 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | The Conversion App | Uniter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (61 ratings)](https://appshunter.io/ios/app/the-conversion-app/id1507894827/reviews) | **[4.7 (74 ratings)](https://appshunter.io/ios/app/uniter-unit-converter/id1589272507/reviews)** |
| Number of ratings | 61 | **74** |
| Positive reviews | 45.0% of reviews | **66.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 18 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sparrow Development LLC](https://appshunter.io/developer/1291798088) | [Arkadiusz Holko](https://appshunter.io/developer/683846458) |

## What reviewers say

### The Conversion App

[App page](https://appshunter.io/ios/app/the-conversion-app/id1507894827)

This utility app offers a simple and powerful way to perform various unit conversions. It supports a wide range of categories and allows users to request new conversions to be added. Available on iPhone and iPad, it's designed for ease of use.

**Highlights:** Area conversion, Data conversion, Length conversion, Speed conversion, Time conversion, Volume conversion, Weight conversion

**In-app purchases:** none


### Uniter

[App page](https://appshunter.io/ios/app/uniter-unit-converter/id1589272507)

Effortlessly convert units of measurement directly within text, websites, or even through your camera. This utility automatically detects and converts units to your preferred system, supporting a vast array of measurement types.

**Highlights:** Automatic unit conversion, Live side-by-side converter, File import for conversion, Camera text scanning, Safari extension, Extensive unit support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Uniter Pro (Monthly) | $3.99 | per month |
| Uniter Pro (Annual) | $14.99 | per year |
| Uniter Pro (Lifetime) | $39.99 | one-time |


## Frequently asked questions

### Is The Conversion App free?

The Conversion App is free to download, with no in-app purchases.

### Is Uniter free?

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

### Which has better reviews, The Conversion App or Uniter?

Uniter is rated higher. The Conversion App averages 4.1 out of 5 from 61 ratings, while Uniter averages 4.7 from 74 ratings.

### Do The Conversion App or Uniter have ads?

Neither The Conversion App nor Uniter shows ads.

### Which is updated more often, The Conversion App or Uniter?

The Conversion App ships an update every 5 weeks, and Uniter every 4 days. Most recently, The Conversion App was updated on November 3, 2026 and Uniter on November 3, 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.*