# Maritime Converter Pro vs Density Unit Converter

The clearest difference is in-app purchases: Density Unit Converter at none against Maritime Converter Pro's 1. Density Unit Converter also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Maritime Converter Pro sells 1 one-off in-app purchase. Density Unit Converter asks for nothing beyond the download.

## The numbers

| Metric | Maritime Converter Pro | Density Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Size | 3 MB | 18 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Motorin](https://appshunter.io/developer/1495533596) | [Density Tech](https://appshunter.io/developer/6805309926) |

## What reviewers say

### Maritime Converter Pro

[App page](https://appshunter.io/ios/app/maritime-converter-pro/id6799078520)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $4.99 | one-time |


### Density Unit Converter

[App page](https://appshunter.io/ios/app/density-unit-converter/id6805309924)

**In-app purchases:** none


## Frequently asked questions

### Is Maritime Converter Pro free?

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

### Is Density Unit Converter free?

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

### Do Maritime Converter Pro or Density Unit Converter have ads?

Neither Maritime Converter Pro nor Density Unit Converter shows ads.

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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.*