# Unit Converter | Converter4U vs Conversion Calculator Plus

The clearest difference is in-app purchases: Unit Converter | Converter4U at none against Conversion Calculator Plus's 1. Unit Converter | Converter4U also leads on ads (none vs shown) and iOS requirement (9.0 vs 15.0). Conversion Calculator Plus's advantage is update cadence (weekly vs every 4 months) and ratings volume (15K vs 194). On price, rating and device support there is nothing between them.

Both are free to download. Conversion Calculator Plus sells 1 in-app purchase, starting at $9.99 per year. Unit Converter | Converter4U asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Unit Converter | Converter4U against 4.7 for Conversion Calculator Plus. That said, the two scores are not equally well evidenced: Conversion Calculator Plus has 15K ratings behind it against 194, so its average is the more settled of the two. Written reviews are what separate them: 57% of Unit Converter | Converter4U's written reviews are positive against 69% of Conversion Calculator Plus's.

Unit Converter | Converter4U ships an update every 4 months, Conversion Calculator Plus weekly. The most recent releases landed on August 14, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Unit Converter | Converter4U | Conversion Calculator Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (194 ratings)](https://appshunter.io/ios/app/unit-converter-converter4u/id620969788/reviews) | **[4.7 (15K ratings)](https://appshunter.io/ios/app/conversion-calculator-plus/id1113920724/reviews)** |
| Number of ratings | 194 | **15K** |
| Positive reviews | 57.1% of reviews | **69.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 51 MB | 58 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) | [Adysseus](https://appshunter.io/developer/447444997) |

## 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


### Conversion Calculator Plus

[App page](https://appshunter.io/ios/app/conversion-calculator-plus/id1113920724)

This app is a versatile unit and currency converter with a user-friendly interface. It supports a wide range of conversion categories, including real-world and crypto currencies, with automatic exchange rate updates. Customize your experience with design options, dark mode, and adjustable home screen layouts.

**Highlights:** Unit and currency conversion, Supports 160+ currencies (real & crypto), Automatic currency exchange rate updates, Simple or carousel design options, Dark Mode support, Customizable home screen layout, Split screen mode on iPad

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads For One Year | $9.99 | per year |

**What reviewers like**

- 🚀 Great app
- 👍 Easy to use
- 🚀 Comprehensive conversions
- 👍 Intuitive interface
- 🚀 Useful tool

**What reviewers complain about**

- 🐛 Consent required for tracking
- 🐛 Update problems
- 🐛 Currency not updating
- 🔒 Forced to allow tracking
- 🔒 Forced to subscribe or view ads

**Reported bugs**

- Currency conversion not working
- App gets stuck on consent page
- Unable to get past ads/subscription page

**Requested features**

- Add running pace conversions
- Add shoe size converter
- Provide paid ad-free version


## Frequently asked questions

### Is Unit Converter | Converter4U free?

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

### Is Conversion Calculator Plus free?

Conversion Calculator Plus is free to download, with in-app purchases available.

### Which has better reviews, Unit Converter | Converter4U or Conversion Calculator Plus?

Conversion Calculator Plus is rated higher. Unit Converter | Converter4U averages 4.6 out of 5 from 194 ratings, while Conversion Calculator Plus averages 4.7 from 15K ratings.

### Do Unit Converter | Converter4U or Conversion Calculator Plus have ads?

Conversion Calculator Plus shows ads; Unit Converter | Converter4U does not.

### Which is updated more often, Unit Converter | Converter4U or Conversion Calculator Plus?

Unit Converter | Converter4U ships an update every 4 months, and Conversion Calculator Plus weekly. Most recently, Unit Converter | Converter4U was updated on August 14, 2026 and Conversion Calculator Plus on September 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.*