Smell Annotator vs Scentience
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Scentience
Visualize and interpret olfactory data from specialized devices. This tool offers real-time scent analysis, AI-powered source localization, and device calibration, all while prioritizing user privacy with offline functionality.
- Real-time olfaction data visualization
- AI-powered scent source localization
- Automatic device calibration
- Offline operation for privacy
- Multi-device swarming coordination
- Chemical compound identification
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The Scentience app is a visualization tool intended to be used as a companion with the Scentience olfaction devices for olfactory robotics. The app allows an iPhone or iPad to simply connect to each device wirelessly through Bluetooth. Just open the app with a Scentience device activated and pairing will occur automatically. Onboard the app is an Olfaction-Vision-Language Model (OVLM) that runs completely on the device. Privacy is of paramount importance to Scentience, so no internet, LTE, or other data connection is required to use and operate the main features of the app. Below are a few features the app provides: - Guidance on how to use Scentience devices. - Automatic calibration of Scentience devices and diagnostics monitoring. - Real-time visualization and interpretation of olfaction data. - An Olfaction-Vision-Language AI Model (OVLM) for locating the source from where detected compounds are emitted. - An Olfaction-Vision-Language-Action AI Model (OVLAM) for enabling Scentience devices to navigate by scent. - Over-the-air firmware updates for Scentience devices through Bluetooth connection. - Information on chemical compounds detected in the air and what causes their presence. - Coordination of multi-device swarming for enhanced scent localization. - Contextualization of detected compounds with local weather data. - Interfacing with third party olfaction sensors. - Export of all data for offline lab use. - Olfactory fingerprinting.
Screenshots
Verdict
The clearest difference is rating: Scentience at 5.0 against Smell Annotator's 1.0. Scentience also leads on ratings volume (12 vs 1). Smell Annotator's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, 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.
Scentience holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Scentience has 12 ratings behind it against 1, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 14, 2026 and September 18, 2026 respectively.
| Parameter | Smell Annotator | Scentience |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (12 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 12 — better |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 53 MB | 1.7 GB |
| Age rating | 4+ | 4+ |
| Developer | SmartNanotubes Technologies | Kordel France |
Customer experience
Smell Annotator
Scentience
In-app purchases
Smell Annotator
No in-app purchases
Scentience
No in-app purchases
Questions
Is Smell Annotator free?
Is Scentience free?
Which has better reviews, Smell Annotator or Scentience?
Do Smell Annotator or Scentience have ads?
Which is updated more often, Smell Annotator or Scentience?
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