Comparison

Coton vs eBird

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

Head to head
About

Coton

Identify cloud types using a comprehensive guide based on the International Cloud Atlas. Learn about their associated weather forecasts, including precipitation and storm probabilities. Explore detailed descriptions and over 120 images to enhance your sky-watching experience.

Highlights
  • Cloud identification by type
  • Detailed descriptions
  • Weather forecast correlation
  • Over 120 cloud images
  • Illustrated guide to cloud classification
  • Metric/Imperial system setting
Features
Currently charting
Read full description

Coton is also on iPad: http://itunes.apple.com/app/id509851679 /!\ Only available in English and French! Coton is a beautiful cloud identification app for your iPhone and iPod Touch. Identify clouds by browsing stunning pictures and detailed descriptions of all the different types of clouds you may spot. Coton relies on the International Cloud Atlas classification, the authoritative book from the World Meteorological Organization. Learn about cloud types and their corresponding weather forecast including chances of rain and storm. Try to figure out the weather of the day, just by looking at the sky! Coton includes: - 33 cloud index cards for the main cloud genera, species, varieties and special clouds - a gallery containing more than 120 awesome pictures - an illustrated guide which simply explains what is a cloud and how clouds are classified - a chart of the 10 cloud genera - a setting allowing you to switch between metric and imperial measurement system The only thing you'll have to do is looking up... Enjoy your spottings! Just remember: "It is rare that a cloud gets the shape of a cloud." Ylipe

About

eBird

Easily record bird sightings in the field and contribute to a global database for scientific research and conservation. This app offers offline functionality, customized checklists, and GPS-enabled location plotting.

Highlights
  • Record bird observations globally
  • Global taxonomy and local common names
  • Location and time-based checklists
  • Rare species flagging
  • Offline functionality
  • GPS location plotting
  • Trip and day list tracking
Features
Currently charting
Read full description

eBird Mobile makes it easy to record the birds you see in the field, and seamlessly link these observations with eBird--a global online database of bird records used by hundreds of thousands of birders around the world. This free resource makes it easy to keep track of what you see, while making your data openly available for scientific research, education, and conservation. eBird Mobile is the only app that passes information directly from the iOS device to your eBird account on the web. Features - Enter bird observations from any location around the world. - Full global taxonomy based on The Clements Checklist of Birds of the World. - Common names available in local languages (e.g., Portuguese names in Brazil or in Portugal). - Checklists customized for your location and time of year, showing most likely species based on eBird data. - Rare species flagged during data entry and on the checklist. - "Record as you go" functionality for incremental list keeping and counting while birding. - GPS enabled location plotting to ensure accuracy. - Map tools that enable selecting from hundreds of thousands of eBird "Hotspots." - Full offline functionality, enabling use in places with limited or no Internet connection. - Trip and Day list functionality that makes it easy to keep track of your species list on a particular outing. - Support for iPhone, iPad, and iPod Touch. - Entire app translated to German, Mandarin, French, Spanish, Portuguese (Brazil), Turkish, and Dutch.

Screenshots

Coton4 screens
eBird4 screens

Verdict

The call

The clearest difference is price: eBird at Free against Coton's $1.99. eBird also leads on update cadence (monthly vs every 5 months) and ratings volume (803 vs 13). Coton's advantage is review sentiment (77% vs 37%) and iOS requirement (8.0 vs 18.0). On ads, in-app purchases, chart position 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

eBird is free to download; Coton costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

eBird holds the better App Store score, 3.8 against 3.5. That said, the two scores are not equally well evidenced: eBird has 803 ratings behind it against 13, so its average is the more settled of the two. Written reviews complicate that: 77% of Coton's written reviews are positive against 37% of eBird's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Coton ships an update every 5 months, eBird monthly. Both last shipped on October 13, 2026.

Scorecard7 real differences · 4 level
Coton versus eBird: the parameters behind the verdict, then further details
ParameterCotoneBird
Price$1.99Free — better
Rating3.5 (13 ratings)3.8 (803 ratings) — better
Positive reviews76.6% of reviews — better36.6% of reviews
Number of ratings13803 — better
Update frequencyEvery 5 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#93 — better#155
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better18.0
Further details — not scored
Size50 MB81 MB
Age rating4+4+
DeveloperEtamin StudioCornell University

Customer experience

Coton

All ratings13 ratings
Positive61.5%
Neutral0.0%
Negative38.5%
Written reviews47 reviews
Positive76.6%
Neutral4.3%
Negative19.1%

eBird

All ratings803 ratings
Positive67.9%
Neutral9.7%
Negative22.4%
Written reviews361 reviews
Positive36.6%
Neutral18.6%
Negative44.9%

Bugs and requests

Coton

Not enough reviews yet to summarise bugs or requests.

eBird

Reported bugs

5 issues
  • App crashes when trying to start a new checklist
  • Inability to log in or access account
  • Inconsistent behavior with bird pack downloads
  • Checklist data not syncing across devices
  • Explore feature not working as expected

Requested features

5 requests
  • Add ability to upload photos and audio directly in the app
  • Implement alphabetical sorting for checklists
  • Improve syncing between app and website
  • Add more advanced filtering and search options
  • Provide offline access to bird information

In-app purchases

None

Coton

No in-app purchases

None

eBird

No in-app purchases

Questions

Is Coton free?
Coton costs $1.99, with no in-app purchases.
Is eBird free?
eBird is free to download, with no in-app purchases.
Which has better reviews, Coton or eBird?
eBird is rated higher. Coton averages 3.5 out of 5 from 13 ratings, while eBird averages 3.8 from 803 ratings.
Do Coton or eBird have ads?
Neither Coton nor eBird shows ads.
Which is updated more often, Coton or eBird?
Coton ships an update every 5 months, and eBird monthly. Most recently, Coton was updated on October 13, 2026 and eBird on October 13, 2026.
Which is more popular, Coton or eBird?
Coton currently peaks at #93 in the App Store charts, and eBird at #155. Chart position reflects recent download velocity rather than total install base.

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