# Speed Converter vs Unit Convert Master

The clearest difference is in-app purchases: Unit Convert Master at none against Speed Converter's 2. Unit Convert Master also leads on update cadence (every 4 months vs every 9 months). Speed Converter's advantage is iOS requirement (15.0 vs 18.2). On price, 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 Convert Master asks for nothing beyond the download.

Speed Converter ships an update every 9 months, Unit Convert Master every 4 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Speed Converter | Unit Convert Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/unit-convert-master/id6743671551/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | — | Ad-supported |
| Size | 27 MB | 4 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kota tada](https://appshunter.io/developer/1658942612) | [Mizuki Hoshida](https://appshunter.io/developer/1797942917) |

## What reviewers say

### 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 |


### Unit Convert Master

[App page](https://appshunter.io/ios/app/unit-convert-master/id6743671551)

Easily convert between over 100 measurement units across 15 categories. This app offers a user-friendly interface, offline functionality, and a history of your conversions for quick access. Ideal for students, professionals, and everyday users needing precise calculations.

**Highlights:** 15+ conversion categories, 100+ measurement units, Intuitive interface with themes, Custom keyboard for input, Conversion history with search, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Speed Converter free?

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

### Is Unit Convert Master free?

Unit Convert Master is free to download, with no in-app purchases.

### Do Speed Converter or Unit Convert Master have ads?

Both Speed Converter and Unit Convert Master show ads.

### Which is updated more often, Speed Converter or Unit Convert Master?

Speed Converter ships an update every 9 months, and Unit Convert Master every 4 months. Most recently, Speed Converter was updated on October 24, 2026 and Unit Convert Master 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.*