Comparison

Smell Annotator vs Coverage Map

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Smell recognition
  • Smell digitalization and annotation
  • Saving and loading measurements
  • Real-time measurement visualization
  • Offline data collection
  • Graph synchronization
Features
Read full description

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

About

Coverage Map

This app provides a crowdsourced map of cellular network performance and coverage across the US, Canada, UK, and Puerto Rico. Users can view real-time speed test data, compare carrier performance, and check signal strength in specific areas. It also includes a built-in speed test to contribute to the map.

Highlights
  • Crowdsourced speed test map
  • Real-time performance data
  • Download, upload, and latency details
  • Carrier and network type filters
  • Built-in speed test functionality
  • Signal strength mapping (US only)
  • Data-driven coverage reports (US only)
Features
Read full description

Coverage Map helps you find the #1 cell phone carrier in your area. It is a crowdsourced map of cellular networks in the US, Canada, United Kingdom, and Puerto Rico with more countries launching soon. SPEED TEST MAP (All Countries) • Highly accurate: see real-world performance reported by users • Real-time: map updates in real-time as new data comes in • Rich detail: tap any square to see download speeds, upload speeds, and latency for all carriers in that area • Powerful filters: filter by carrier, LTE/5G, download speeds, upload speeds, or see your speed tests only • Helpful color profiles: default, heat map, and best carrier help you visualize and understand the data • Easy to understand: see what carrier performs best in an area at a glance with the Best Carrier color profile BUILT-IN SPEED TEST (All Countries) • Test your speeds: see how fast your LTE or 5G connection is by running a speed test • Accurate results: get accurate results for download speed, upload speed, and latency • Recurring tests: run up to 500 recurring tests automatically and customize the pause duration between tests • Set a data limit: limit how much data the app can use • Tag your tests: tag a test as indoor, outdoor, driving, or other • Improve the Speed Map: running a speed test automatically contributes to the fastest-growing crowdsourced map of cellular networks (note: if your country is not currently supported, when we do launch in your country all of your tests will instantly be mapped and will show up on the map) SIGNAL STRENGTH MAP (US only) • Check reception: see where each carrier has great, good, or poor coverage • Compare coverage footprints: toggle between carriers to see how coverage footprints compare in different areas • Data for every location: the Signal Strength Map uses data from the FCC Broadband Collection, which has coverage data for the continental U.S., Alaska, and Hawaii COVERAGE REPORT MAP (US only) • Data-driven reports: the Coverage Report Map aggregates all available data points to generate detailed reports of cellular coverage & performance in every state, county, city, and ZIP code • Percentage covered: see what percentage of an area each carrier covers • Weighted median: see weighted median values for download speed, upload speeds, and latency for a better picture of real-world cellular performance • Carrier rankings: see what carrier ranks best for coverage, speed, reliability, and overall performance in every area • Distribution graphs: see the distribution graphs for download speeds, upload speeds, and latency • Performance by time of day: see how data speeds vary over the course of day as network traffic picks up Terms of Use and Privacy Policy: https://coveragemap.com/privacy-policy

Screenshots

Smell Annotator3 screens
Coverage Map4 screens

Verdict

The call

The clearest difference is rating: Coverage Map at 4.7 against Smell Annotator's 1.0. Coverage Map also leads on ratings volume (784 vs 1). Smell Annotator's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, update cadence, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Coverage Map holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Coverage Map has 784 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Smell Annotator ships an update monthly, Coverage Map fortnightly. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.

Scorecard4 real differences · 6 level
Smell Annotator versus Coverage Map: the parameters behind the verdict, then further details
ParameterSmell AnnotatorCoverage Map
PriceFreeFree
Rating1.0 (1 ratings)4.7 (784 ratings) — better
Positive reviews—67.4% of reviews
Number of ratings1784 — better
Update frequencyMonthlyFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size53 MB69 MB
Age rating4+4+
DeveloperSmartNanotubes TechnologiesCoverage Map LLC

Customer experience

Smell Annotator

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

Coverage Map

All ratings784 ratings
Positive92.5%
Neutral2.3%
Negative5.2%
Written reviews132 reviews
Positive67.4%
Neutral10.6%
Negative22.0%

Bugs and requests

Smell Annotator

Not enough reviews yet to summarise bugs or requests.

Coverage Map

Reported bugs

4 issues
  • Frequent crashes when viewing maps
  • Speed test failures and timeouts
  • Inconsistent speed test results
  • Incorrect location detection

Requested features

5 requests
  • Low data mode
  • Offline coverage map downloads
  • Ability to set test duration and frequency
  • Display cell tower locations
  • Expand to international coverage

In-app purchases

None

Smell Annotator

No in-app purchases

None

Coverage Map

No in-app purchases

Questions

Is Smell Annotator free?
Smell Annotator is free to download, with no in-app purchases.
Is Coverage Map free?
Coverage Map is free to download, with no in-app purchases.
Which has better reviews, Smell Annotator or Coverage Map?
Coverage Map is rated higher. Smell Annotator averages 1.0 out of 5 from 1 ratings, while Coverage Map averages 4.7 from 784 ratings.
Do Smell Annotator or Coverage Map have ads?
Coverage Map shows ads; Smell Annotator does not.
Which is updated more often, Smell Annotator or Coverage Map?
Smell Annotator ships an update monthly, and Coverage Map fortnightly. Most recently, Smell Annotator was updated on September 14, 2026 and Coverage Map on September 24, 2026.

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