# Speed Converter vs Wattage Conversion

The clearest difference is price: Wattage Conversion at Free against Speed Converter's $1.99. Wattage Conversion also leads on update cadence (monthly vs every 56 months). Speed Converter's advantage is in-app purchases (none vs 1) and iOS requirement (13.4 vs 15.6). On ads and device support there is nothing between them.

Wattage Conversion is free to download; Speed Converter costs $1.99 up front. Wattage Conversion sells 1 one-off in-app purchase. Speed Converter asks for nothing beyond the download.

Speed Converter ships an update every 56 months, Wattage Conversion monthly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Speed Converter | Wattage Conversion |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (10 ratings)](https://appshunter.io/ios/app/speed-converter/id1536584536/reviews)** | — |
| Number of ratings | **10** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 56 months | **Monthly** |
| Monetization | Paid | — |
| Size | 0 MB | 37 MB |
| Requires iOS | **13.4** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [akira ohmachi](https://appshunter.io/developer/1338624340) |

## What reviewers say

### Speed Converter

[App page](https://appshunter.io/ios/app/speed-converter/id1536584536)

Quickly convert between various speed units including m/s, km/h, mph, and knots. Ideal for drivers, sailors, racers, and anyone needing fast speed calculations.

**Highlights:** Converts m/s, km/h, mph, knots, Converts foot per hour (fps), Fast and quick conversions, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Wattage Conversion

[App page](https://appshunter.io/ios/app/wattage-conversion/id6473688997)

**Features:** macOS Compatibility

**In-app purchases (1)**

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


## Frequently asked questions

### Is Speed Converter free?

Speed Converter costs $1.99, with no in-app purchases.

### Is Wattage Conversion free?

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

### Do Speed Converter or Wattage Conversion have ads?

Neither Speed Converter nor Wattage Conversion shows ads.

### Which is updated more often, Speed Converter or Wattage Conversion?

Speed Converter ships an update every 56 months, and Wattage Conversion monthly. Most recently, Speed Converter was updated on November 3, 2026 and Wattage Conversion on November 4, 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.*