# sDrives vs Marshal

The clearest difference is in-app purchases: Marshal at none against sDrives's 1. sDrives's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | sDrives | Marshal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (27 ratings)](https://appshunter.io/ios/app/sdrives-vfd-help/id1238863129/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 241 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Evgeny Makarenkov](https://appshunter.io/developer/1214502122) | [Control Techniques Limited](https://appshunter.io/developer/577139804) |

## What reviewers say

### sDrives

[App page](https://appshunter.io/ios/app/sdrives-vfd-help/id1238863129)

Access alarm descriptions, troubleshooting guides, and user manuals for Siemens drives. This professional tool provides essential information for commissioning and service, supporting a wide range of drive models.

**Highlights:** Quick alarm description access, Troubleshooting guides, Links to user manuals, Support for multiple Siemens drive models, Multi-language alarm descriptions, In-app purchase to unlock all drives

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Drives | $1.99 | one-time |


### Marshal

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

**In-app purchases:** none


## Frequently asked questions

### Is sDrives free?

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

### Is Marshal free?

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

### Do sDrives or Marshal have ads?

Neither sDrives nor Marshal shows ads.

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

sDrives ships an update every 2 months, and Marshal every 2 months. Most recently, sDrives was updated on October 8, 2026 and Marshal on October 13, 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.*