# Unit Converter | Converter4U vs Lambda Mu 25

The clearest difference is iOS requirement: Unit Converter | Converter4U at 9.0 against Lambda Mu 25's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Unit Converter | Converter4U | Lambda Mu 25 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (194 ratings)](https://appshunter.io/ios/app/unit-converter-converter4u/id620969788/reviews)** | — |
| Number of ratings | **194** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free | — |
| Size | 51 MB | 13 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VisTech.Projects LLC](https://appshunter.io/developer/620969851) | [Poznan Supercomputing and Networking Center](https://appshunter.io/developer/726093818) |

## What reviewers say

### Unit Converter | Converter4U

[App page](https://appshunter.io/ios/app/unit-converter-converter4u/id620969788)

This app provides a powerful and intuitive way to convert between a wide range of units, including length, weight, temperature, and more. It offers simultaneous conversion of multiple units and customizable options for a personalized experience. Get instant, accurate results for all your conversion needs.

**Highlights:** Simultaneous multi-unit conversion, Customizable unit options, Copy converted values to clipboard, Supports numerous measurement categories, Intuitive and user-friendly interface

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

**In-app purchases:** none


### Lambda Mu 25

[App page](https://appshunter.io/ios/app/lambda-mu-25/id6809826587)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter | Converter4U free?

Unit Converter | Converter4U is free to download, with no in-app purchases.

### Is Lambda Mu 25 free?

Lambda Mu 25 is free to download, with no in-app purchases.

### Do Unit Converter | Converter4U or Lambda Mu 25 have ads?

Neither Unit Converter | Converter4U nor Lambda Mu 25 shows ads.

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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.*