Coton is a mobile app designed and developed by Etamin Studio.

Pictures used in the slider:
- Sunset Solar Halo at Keys, by Wing-Chi Poon (CC BY-SA 2.5)
- Mammatus Squaw Valley, by Msaal (CC BY-SA 3.0)
- Shelf cloud arcus, by Longyester (CC BY-SA 3.0)
- Cumulus mountain, by Changlc (domaine public)

Website designed by Alex Mosnier (Etamin Studio).Somatic Font by Lauren Lee.
Android is a trademark of Google Inc. iPhone®, iPod® and App Store℠
are trademarks of Apple Inc., registered in the U.S. and other countries.

the cloud


identify clouds

Identify clouds by browsing stunning pictures and detailed descriptions of the different genera, species and varieties of clouds you may spot. Coton relies on the International Cloud Atlas classification (plus a few special clouds!)

predict weather

Learn about clouds 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!

What experts say
about Coton

"Thanks to its friendly interface, simple explanations and nice pictures, Coton will soon become your essential companion to observe the skies!"
Thierry Michel,
teacher at the National School
of Meteorology, France
"Coton is a very good idea, the design is good and easy to use, and would make a good educational tool."
George Anderson, weather forecaster
for the UK Met Office, Fellow of the Royal
Meteorological Society, United Kingdom
"C'est une application très pratique et très intéressante pour mieux connaître les nuages. Ils sont bien présentés et bien décrits. Elle sera très utile aux nombreux météo-amateurs."
Marc Vandiepenbeeck,
climatologist for the Royal
Meteorological Institute, Belgium
"Coton is a great resource for identifying clouds and I think it will be very popular."
Linden Ashcroft,
AMOS Bulletin editor,

Did you know that clouds
also have their name?

See you soon on Cotton to discover them!
Discover also the Volcans Auvergne app