Gas Detection vs Smell Annotator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gas Detection
Explore gas and vapor measurement technology with this app. It details Dräger-Tube, Dräger Sensor, and Dräger Chip systems, offering comprehensive listings of tubes and chips with measurement parameters. Learn about portable monitors and access support resources like compatibility charts and how-to videos.
- Gas and vapor measurement technology overview
- Dräger-Tube, Sensor, and Chip system details
- Complete listing of Dräger-Tubes and chips
- Introduction to portable monitors
- Sensor compatibility chart
- How-to videos and error code charts
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The Dräger Gas Detection App provides a general overview of gas and vapor measurement technology. The basic principles of the Dräger-Tube, Dräger Sensor and Dräger Chip Measurement System are described and a complete listing of the Dräger-Tubes and chips are provided with all relevant measurement parameters. In addition, there is an introduction to portable monitors, including electrochemical, catalytic, and infrared sensor technology, as well as a complete list of Dräger sensors and monitors. The support section contains a sensor compatibility chart, how-to videos, error code charts and links to our new customer support pages.
Smell Annotator
This application enables machines to digitally sense and analyze smells using nanomaterial-based technology. It allows users to view, annotate, and recognize smell measurements in real-time, functioning as part of a developer kit.
- Smell recognition
- Smell digitalization and annotation
- Saving and loading measurements
- Real-time measurement visualization
- Offline data collection
- Graph synchronization
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Today, machines can see, hear, feel, and even learn. But smell? Not really! Our nanomaterial-based technology enables machines to use an electronic sense of smell. Smell Annotator app is an AI-based software program which is used to view, annotate and analyze smell measurements taken with the Smell Inspector and to recognize annotated smells in real time. The Smell Annotator app is a part of the Smell Inspector Developer Kit. The Smell Annotator gives you access to the smell sensors of your Smell Inspector developer kit. APP FEATURES * Smell recognition [NEW] * Smell digitalization and annotation * Saving measurements and loading saved data * Visualization of real-time and saved measurements with temperature and humidity data * Collect measurement data with or without internet access * Sync graphs for better clarity of data SENSORS * 4 Smell iX16 detector chips * Temperature sensor * Humidity sensor SMELL INSPECTOR The Smell Inspector is a ready-to-use device for anyone and a developer kit. It is suitable for testing and exploring different smell-related applications in the fields of product quality, safety & security, life & care, air quality, and many others. It has four Smell iX 16 detector chips inside, can be connected to a PC, tablet, or smartphone, and can be operated with Smell Annotator software. USER MANUAL For more information about how to use the App and the Smell Inspector device, go to: http://smart-nanotubes.com/downloads/ ABOUT US Along with a great community of industry experts and researchers, SmartNanotubes Technologies shares the vision of digital smell recognition. Our goal is to enable digital smell recognition in a fast and easy way and help our customers to develop product solutions for their own smell and gas detection applications. Visit us at: http://smart-nanotubes.com
Screenshots
Verdict
The clearest difference is rating: Gas Detection at 5.0 against Smell Annotator's 1.0. Gas Detection also leads on iOS requirement (12.0 vs 15.0). Smell Annotator's advantage is update cadence (monthly vs every 16 months). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Gas Detection holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Gas Detection ships an update every 16 months, Smell Annotator monthly. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.
| Parameter | Gas Detection | Smell Annotator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 16 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 79 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Draegerwerk AG & Co. KGaA | SmartNanotubes Technologies |
Customer experience
Gas Detection
Smell Annotator
In-app purchases
Gas Detection
No in-app purchases
Smell Annotator
No in-app purchases
Questions
Is Gas Detection free?
Is Smell Annotator free?
Which has better reviews, Gas Detection or Smell Annotator?
Do Gas Detection or Smell Annotator have ads?
Which is updated more often, Gas Detection or Smell Annotator?
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