Best Smell Annotator Apps

250+ iOS apps curated and reviewed

3.4 avg rating

20 free apps

Updated October 2026

With an average user rating of 3.4★, 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 (October 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	PlumeMapper	Free	—	No	No	Sep 2026
6	Odor Reporter	Free	4.8★ (6)	No	No	May 2026
7	Aromatic Families	Free	1.8★ (4)	No	No	Aug 2026
8	scentia	Free	5.0★ (2)	No	No	Sep 2026

Top Picks for Smell Annotator

#1

Smell Annotator by SmartNanotubes Technologies

Smell Annotator

Editor's Choice

1.0(1 ratings)

Free

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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

0.0(0 ratings)

Free

Smell.Board Hub screenshot 1

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#3

IntelliScent by Global Detection Systems Corp

Worth Considering

0.0(0 ratings)

Free

IntelliScent screenshot 1

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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

Ambient Odour Surveying Tool.

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

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

What's That Smell?

What's That Smell?

What's That Smell?

Discover what's in the air

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

Scenting.com MoodPlus

Scenting.com MoodPlus

Scenting.com MoodPlus

by SCENTING.COM, LLC

Smart Fragrance Diffuser

Control and customize your home and car fragrance experience with a smart diffuser. Schedule scent intensity, diffusion times, and ambient lighting all from your phone.

Control scent intensityCustom diffusion schedulesSet timers

🛍️ Shopping

free with in-app purchases

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

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 JAD PRODUCT SALES LLC

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

AI Product Scanner - ScentSnap

AI Product Scanner - ScentSnap

AI Product Scanner - ScentSnap

Fragrantica Fragrance Wiki

Instantly identify any perfume by taking a photo of the bottle. Discover fragrance notes, scent characteristics, and similar perfumes. Manage your collection and receive personalized recommendations.

Instant perfume identification via photoDetailed fragrance notes and characteristicsDiscover comparable perfumes

free with in-app purchases

by Comon Invent B.V.

Effortlessly customize and control your scenting experience with this app, designed exclusively for Aroma Core machines. Manage your environment's aroma with just a few taps.

Customize scent experienceControl scenting machinesEffortless operation

FAQ about Smell Annotator

What are the best smell annotator apps for iPhone?

Smell Annotator tops our smell annotator apps ranking as of October 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 October 2026.

How many smell annotator apps are on the App Store?

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