# Unit Converter, 50+ Calculator vs EVTools

The clearest difference is in-app purchases: EVTools at none against Unit Converter, 50+ Calculator's 1. Unit Converter, 50+ Calculator's advantage is iOS requirement (11.0 vs 18.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Unit Converter, 50+ Calculator sells 1 one-off in-app purchase. EVTools asks for nothing beyond the download.

Unit Converter, 50+ Calculator ships an update every 2 months, EVTools monthly. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Unit Converter, 50+ Calculator | EVTools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (53 ratings)](https://appshunter.io/ios/app/unit-converter-50-plus-calculator/id1006382972/reviews)** | — |
| Number of ratings | **53** | — |
| Positive reviews | 61.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 7 MB |
| Requires iOS | **11.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Loopbots Technology](https://appshunter.io/developer/1384442096) | [Richard Walker](https://appshunter.io/developer/1016056619) |

## What reviewers say

### Unit Converter, 50+ Calculator

[App page](https://appshunter.io/ios/app/unit-converter-50-plus-calculator/id1006382972)

This app offers a comprehensive solution for converting various units, including currencies, measurements, and more. With over 45 converters in a single, user-friendly interface, it simplifies calculations and saves device storage. It works offline and supports over 150 international currencies.

**Highlights:** All-in-one unit conversion, 45+ free converters, Currency converter (150+ currencies), Offline functionality, User-friendly interface, App-wide search

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad | $1.99 | one-time |


### EVTools

[App page](https://appshunter.io/ios/app/evtools/id6798490324)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter, 50+ Calculator free?

Unit Converter, 50+ Calculator is free to download, with in-app purchases available.

### Is EVTools free?

EVTools is free to download, with no in-app purchases.

### Do Unit Converter, 50+ Calculator or EVTools have ads?

Neither Unit Converter, 50+ Calculator nor EVTools shows ads.

### Which is updated more often, Unit Converter, 50+ Calculator or EVTools?

Unit Converter, 50+ Calculator ships an update every 2 months, and EVTools monthly. Most recently, Unit Converter, 50+ Calculator was updated on October 16, 2026 and EVTools on October 14, 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.*