# Marshal vs ConvertPro

The clearest difference is in-app purchases: Marshal at none against ConvertPro's 1. Marshal also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ConvertPro sells 1 one-off in-app purchase. Marshal asks for nothing beyond the download.

Marshal ships an update every 2 months, ConvertPro monthly. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Marshal | ConvertPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/marshal/id1523682436/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 241 MB | 5 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Control Techniques Limited](https://appshunter.io/developer/577139804) | [Ademola Mayowa Olatunji](https://appshunter.io/developer/1862678370) |

## What reviewers say

### Marshal

[App page](https://appshunter.io/ios/app/marshal/id1523682436)

This utility app leverages NFC technology to quickly commission, clone, diagnose, and monitor drives. It offers guided diagnostics, parameter backup and restore, and secure access to drive configurations. Easily share configurations and activate extended warranties.

**Highlights:** NFC-enabled drive commissioning, Parameter cloning and backup, Guided diagnostics for drive issues, Offline configuration creation, Configuration sharing via multiple platforms, 5-year warranty activation, Drive status monitoring and security

**In-app purchases:** none


### ConvertPro

[App page](https://appshunter.io/ios/app/convertpro-unit-converter/id6809904618)

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is Marshal free?

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

### Is ConvertPro free?

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

### Do Marshal or ConvertPro have ads?

Neither Marshal nor ConvertPro shows ads.

### Which is updated more often, Marshal or ConvertPro?

Marshal ships an update every 2 months, and ConvertPro monthly. Most recently, Marshal was updated on October 29, 2026 and ConvertPro on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*