# Unit Conversion Calculator $ vs Speed Converter

The clearest difference is in-app purchases: Unit Conversion Calculator $ at none against Speed Converter's 2. Unit Conversion Calculator $ also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Speed Converter sells 2 in-app purchases, starting at $4.99 per month. Unit Conversion Calculator $ asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 9 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Unit Conversion Calculator $ | Speed Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/unit-conversion-calculator/id6742060456/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | Every 9 months |
| Size | 28 MB | 27 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JanoGroup LLC](https://appshunter.io/developer/1781461557) | [kota tada](https://appshunter.io/developer/1658942612) |

## What reviewers say

### Unit Conversion Calculator $

[App page](https://appshunter.io/ios/app/unit-conversion-calculator/id6742060456)

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

**In-app purchases:** none


### Speed Converter

[App page](https://appshunter.io/ios/app/speed-converter-speedcon/id6743573027)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free for 1 month | $4.99 | per month |
| Ad-free for 1 year | $49.99 | per year |


## Frequently asked questions

### Is Unit Conversion Calculator $ free?

Unit Conversion Calculator $ is free to download, with no in-app purchases.

### Is Speed Converter free?

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

### Do Unit Conversion Calculator $ or Speed Converter have ads?

Both Unit Conversion Calculator $ and Speed Converter show ads.

### Which is updated more often, Unit Conversion Calculator $ or Speed Converter?

Unit Conversion Calculator $ ships an update every 9 months, and Speed Converter every 9 months. Most recently, Unit Conversion Calculator $ was updated on October 24, 2026 and Speed Converter on October 24, 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.*