# sDrives vs CM IOT Config

The clearest difference is in-app purchases: CM IOT Config at none against sDrives's 1. sDrives's advantage is iOS requirement (12.0 vs 16.0). 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. CM IOT Config asks for nothing beyond the download.

sDrives ships an update every 2 months, CM IOT Config every 3 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | sDrives | CM IOT Config |
| --- | --- | --- |
| 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 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 67 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Evgeny Makarenkov](https://appshunter.io/developer/1214502122) | [Siemens AG](https://appshunter.io/developer/394503271) |

## 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 |


### CM IOT Config

[App page](https://appshunter.io/ios/app/cm-iot-config/id1578297088)

**In-app purchases:** none


## Frequently asked questions

### Is sDrives free?

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

### Is CM IOT Config free?

CM IOT Config is free to download, with no in-app purchases.

### Do sDrives or CM IOT Config have ads?

Neither sDrives nor CM IOT Config shows ads.

### Which is updated more often, sDrives or CM IOT Config?

sDrives ships an update every 2 months, and CM IOT Config every 3 months. Most recently, sDrives was updated on October 24, 2026 and CM IOT Config on October 27, 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.*