# FST TechTool vs GEMÜ App

The clearest difference is rating: FST TechTool at 4.5 against GEMÜ App's 4.0. FST TechTool also leads on iOS requirement (7.0 vs 16.8). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FST TechTool holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

FST TechTool ships an update every 2 months, GEMÜ App every 3 months. The most recent releases landed on October 5, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | FST TechTool | GEMÜ App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/fst-techtool/id994415240/reviews)** | [4.0 (5 ratings)](https://appshunter.io/ios/app/gemu-app/id1530808672/reviews) |
| Number of ratings | 4 | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 87 MB | 193 MB |
| Requires iOS | **7.0** | 16.8 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fluid Service Technologies](https://appshunter.io/developer/994415239) | [GEMU Gebr. Mueller Apparatebau GmbH & Co. Kommanditgesellschaft](https://appshunter.io/developer/1129717515) |

## What reviewers say

### FST TechTool

[App page](https://appshunter.io/ios/app/fst-techtool/id994415240)

This app helps machine shops and manufacturing facilities monitor and maintain fluids. It allows technicians to record fluid maintenance data, track inventory, and generate reports for managers. Optimize machining processes and enhance fluid performance from anywhere.

**Highlights:** Monitor pH and refractometer readings, Track coolant and oil usage, Manage waste, recycling, and inventory, Generate data reports, Barcode scanning for machines, Electronic work orders

**Features:** macOS Compatibility

**In-app purchases:** none


### GEMÜ App

[App page](https://appshunter.io/ios/app/gemu-app/id1530808672)

Access digital services for process industry valve, measurement, and control systems. Quickly contact the company, retrieve product documentation, and configure devices via Bluetooth. Identify products using QR codes or RFID tags for instant information retrieval.

**Highlights:** Contact GEMÜ easily, On-the-go product documentation, Bluetooth device operation & configuration, QR code/RFID product identification, Article-specific information access

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

**In-app purchases:** none


## Frequently asked questions

### Is FST TechTool free?

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

### Is GEMÜ App free?

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

### Which has better reviews, FST TechTool or GEMÜ App?

FST TechTool is rated higher. FST TechTool averages 4.5 out of 5 from 4 ratings, while GEMÜ App averages 4.0 from 5 ratings.

### Do FST TechTool or GEMÜ App have ads?

Neither FST TechTool nor GEMÜ App shows ads.

### Which is updated more often, FST TechTool or GEMÜ App?

FST TechTool ships an update every 2 months, and GEMÜ App every 3 months. Most recently, FST TechTool was updated on October 5, 2026 and GEMÜ App on September 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.*