sDrives vs STS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
sDrives
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.
- 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
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The 'sDrives - VFD help' app provides quick access to alarm descriptions of Siemens drives. In a second you get a full alarm description, troubleshooting guide and even a link to the latest user manual. App greatly helps by commissioning and service giving you the necessary information when you need it and where you need it. It is small but really feature full application. A professional tool for professionals. Currently supported drives: G110, G120 CU240B-2, , G120 CU240E-2, G120 CU230P-2, G120C, G120P, MM420, MM430, MM440, S110, SIMOREG DC-MASTER, SIMOVERT MASTERDRIVES VC, V20, V60, V90. The app is in English. For most popular drives the alarms descriptions are also available in Russian, Spanish, French, Italian and simplified Chinese. Free version is fully functioning but is limited with only one randomly chosen drive. If you like the app, you can unlock all the drives by means of in-app purchase. IMPORTANT DISCLAIMER This app IS NOT affiliated with Siemens AG or any of its affiliates!
STS
This utility helps users select the appropriate Siemens soft starter for their specific needs. It simulates applications based on various parameters and provides detailed reports, with direct links to product data.
- Soft starter application simulation
- Input data for environment, motor, and load
- Starting parameter configuration
- Suggested soft starter selection
- Simulation and component reports
- Direct access to Siemens Industry Mall data
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This application allows users to find the right Siemens soft starter for his specific application. Features: * Simulate a soft starter application based on your input data: ** Environment & supply ** Motor ** Load ** Starting parameters for the application ** Additional functions ** Starting profile * Select a suggested soft starter * Generate a report for a selected soft starter with the summary of the simulation and optional feeder main components * Direct access to selected soft starter data in the Siemens Industry Mall * Metrics: SI and Imperial * Languages: English, German, Chinese, French, Spanish, Portuguese, Turkish, Czech, Italian and Russian
Screenshots
Verdict
The clearest difference is rating: STS at 5.0 against sDrives's 4.5. STS also leads on in-app purchases (none vs 1). sDrives's advantage is ratings volume (27 vs 1) and update cadence (every 2 months vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. sDrives sells 1 one-off in-app purchase. STS asks for nothing beyond the download.
STS holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: sDrives has 27 ratings behind it against 1, so its average is the more settled of the two.
sDrives ships an update every 2 months, STS every 5 months. The most recent releases landed on September 21, 2026 and October 8, 2026 respectively.
| Parameter | sDrives | STS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (27 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 27 — better | 1 |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 12.2 |
| Further details — not scored | ||
| Size | 12 MB | 67 MB |
| Age rating | 4+ | 4+ |
| Developer | Evgeny Makarenkov | Siemens AG |
Customer experience
sDrives
STS
In-app purchases
sDrives
- All Drives$1.99
STS
No in-app purchases
