# Universal Converter. vs Double Unit Converter

The clearest difference is price: Double Unit Converter at Free against Universal Converter.'s $4.99. Double Unit Converter also leads on update cadence (monthly vs every 24 months) and iOS requirement (12.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Double Unit Converter is free to download; Universal Converter. costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Universal Converter. ships an update every 24 months, Double Unit Converter monthly. The most recent releases landed on October 23, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Universal Converter. | Double Unit Converter |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.3 (12 ratings)](https://appshunter.io/ios/app/universal-converter/id519552652/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Monthly** |
| Monetization | Paid | — |
| Size | 5 MB | 9 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [MIHAIL MILUSHEV](https://appshunter.io/developer/648847538) |

## What reviewers say

### Universal Converter.

[App page](https://appshunter.io/ios/app/universal-converter/id519552652)

This utility app provides a comprehensive conversion calculator for a vast array of units across 64 categories. It offers automatic calculations based on input changes and supports regional decimal separators for ease of use.

**Highlights:** 64 conversion categories, 1333 units supported, Automatic value calculation, Supports regional decimal separators, Simple and easy to use interface, Engineering and educational utility

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

**In-app purchases:** none


### Double Unit Converter

[App page](https://appshunter.io/ios/app/double-unit-converter/id1451391414)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Universal Converter. free?

Universal Converter. costs $4.99, with no in-app purchases.

### Is Double Unit Converter free?

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

### Do Universal Converter. or Double Unit Converter have ads?

Neither Universal Converter. nor Double Unit Converter shows ads.

### Which is updated more often, Universal Converter. or Double Unit Converter?

Universal Converter. ships an update every 24 months, and Double Unit Converter monthly. Most recently, Universal Converter. was updated on October 23, 2026 and Double Unit Converter on October 19, 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.*