Best Smell Annotator Apps

250+ iOS apps curated and reviewed

3.8 avg rating

20 free apps

Updated August 2026

With an average user rating of 3.8★, the smell annotator category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.

Compare top Smell Annotator Apps (August 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Smell Annotator	Free	1.0★ (1)	No	No	Jul 2026
2	Smell.Board Hub	Free	—	No	No	Aug 2026
3	IntelliScent	Free	—	No	No	May 2026
4	SMELLiT	Free	4.5★ (61)	No	No	Sep 2026
5	scentia	Free	5.0★ (2)	No	No	Sep 2026
6	u-Smell-it	Free	4.5★ (12)	No	No	May 2026
7	Odor Reporter	Free	4.8★ (6)	No	No	May 2026
8	Aromatic Families	Free	1.8★ (4)	No	No	Aug 2026

Top Picks for Smell Annotator

#1

Smell Annotator by SmartNanotubes Technologies

Smell Annotator

Editor's Choice

🔧 Utilities

1.0(1 ratings)

Free

Smell Annotator screenshot 1

Smell Annotator screenshot 2

Smell Annotator screenshot 3

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.

#2

Smell.Board Hub by SmartNanotubes Technologies

Smell.Board Hub

Strong Contender

🔧 Utilities

0.0(0 ratings)

Free

Smell.Board Hub screenshot 1

Smell.Board Hub screenshot 2

Smell.Board Hub screenshot 3

Smell.Board Hub screenshot 4

Smell.Board Hub screenshot 5

Smell.Board Hub screenshot 6

#3

IntelliScent by Global Detection Systems Corp

Worth Considering

🔧 Utilities

0.0(0 ratings)

Free

IntelliScent screenshot 1

IntelliScent screenshot 2

IntelliScent screenshot 3

IntelliScent screenshot 4

IntelliScent screenshot 5

IntelliScent screenshot 6

More Smell Annotator apps to explore

What do humans smell?

Participate in scientific research about the human sense of smell. Log daily scents and learn about olfaction. Earn rewards for consistent participation in this research project.

Log daily scentsLearn about olfactionParticipate in research

Control Bluetooth-enabled scent diffusers remotely. Adjust settings like working hours, weekly schedules, and intensity levels. Monitor remaining scent levels and customize device names for easy identification.

Bluetooth device controlSchedule working hours and daysAdjust scent intensity levels

by U-SMELL-IT LLC

This app works with scent cards to test your sense of smell. Scan a card's QR code, scratch and smell scent windows, then select the best match from common scents. It helps determine if you have a normal sense of smell or a loss.

QR code scanningScent identificationSmell ability assessment

For a better environment

Report foul odors in your environment using your phone's GPS. This app helps pinpoint odor locations for authorities to address, improving community quality of life. It also provides information on common odor sources.

Report foul odorsUtilizes GPS for precise locationProvides information on odor sources

Aromatic Families

Aromatic Families

Aromatic Families

Control Bluetooth-enabled scent diffusers with your smartphone. Adjust settings like working hours, levels, and monitor scent levels. Personalize device names and manage passwords for a customized aromatic experience.

Bluetooth device controlAdjust working hours and levelsMonitor scent percentage

Olfactory UI for machines

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 visualizationAI-powered scent source localizationAutomatic device calibration

by Guangzhou Chi Yang Electrical machinery co., LTD

Control Bluetooth-enabled scent diffusers remotely. Adjust settings like working hours, levels, and scent intensity. Monitor remaining scent levels and customize device names for a personalized atmosphere.

Bluetooth device controlAdjust working hours and levelsMonitor scent percentage

by Community Empowerment LLC

This app allows residents across the United States to report and track pollution odors in their local areas. Visualize smell reports on a map to identify odor hotspots and understand potential links to air quality issues.

Report pollution odorsTrack odor concentrationsView smell reports on a map

by Cube Architectural general contracting for buildings LLC

Spectora Inspection Software

Spectora Inspection Software

Spectora Inspection Software

Home Inspection Software

This mobile application streamlines home inspections with a modern, intuitive interface. Quickly document defects, capture and annotate photos, and generate professional web-based reports for clients. Sync data seamlessly to the cloud or publish directly from your device.

Offline inspections and summary reviewFast photo annotation with arrows/circlesCustomizable comments and location tags

free with in-app purchases

Control Bluetooth-enabled scent diffusers with your smartphone. Adjust settings like working hours, weekly schedules, and scent intensity. Monitor remaining scent levels and personalize device names for a customized aromatic experience.

Bluetooth device controlSet working hours and weekly schedulesMonitor scent levels

by Comon Invent B.V.

Control and schedule scent output from connected Air-Scent dispensers. Adjust intensity and set weekly or daily intervals directly from your smartphone. Ideal for scent marketing and odor control.

Schedule scenting intervalsAdjust output intensityPassword protection

by BlueStreak IOT

Remotely monitor, control, and manage fragrance diffusers from any location. This app connects to scent systems via a cloud service, allowing users to customize fragrance intensity, days, and times for a consistent brand experience. It's designed for businesses seeking to enhance their ambient scent marketing.

Remote monitoring and controlCustomizable fragrance intensityScheduled fragrance playback

An educational game designed to enhance your olfactory vocabulary. It helps you connect scent descriptions with everyday objects and experiences through interactive gameplay, improving sensory awareness and memory recall.

Interactive scent gameplayDevelop olfactory vocabularyConnect scents to objects

Scent Kit - Perfume Identifier

Scent Kit - Perfume Identifier

Scent Kit - Perfume Identifier

Find fragrance notes instantly

FAQ about Smell Annotator

What are the best smell annotator apps for iPhone?

Smell Annotator tops our smell annotator apps ranking as of August 2026, with a 1.0-star average from 1 App Store ratings, and it's free to download.

Are there free smell annotator apps for iPhone?

Yes — 20 of the top smell annotator apps we rank are free to download, including Smell Annotator and Smell.Board Hub.

Does Smell Annotator have ads or in-app purchases?

Smell Annotator has no ads and has no in-app purchases, according to its App Store listing as of August 2026.

How many smell annotator apps are on the App Store?

We track 250+ smell annotator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.

What is Smell Annotator used for?

Smell Annotator is an AI-based software program designed to view, annotate, and analyze smell measurements taken with the Smell Inspector device. It also helps in recognizing annotated smells in real time.

What hardware is required to use Smell Annotator?

Smell Annotator is part of the Smell Inspector Developer Kit and requires the Smell Inspector device, which contains four Smell iX16 detector chips, a temperature sensor, and a humidity sensor.