Cloud-a-Day

Cloud Appreciation Society

About this app

Discover the amazing and unexpected world of clouds with Cloud-a-Day, your virtual guide to the wonders of the sky. 

With stunning photographs and enlightening descriptions. Cloud-a-Day will teach you to identify 40 different cloud formations and 18 optical effects caused by clouds. From the common Cumulus cloud or rainbow to the rare and fleeting fluctus cloud or circumhorizon arc, you will learn what makes each formation special, and how to identify the many beautiful light phenomena of the atmosphere.

Don’t know what cloud or optical effect you are spotting? Just answer a few questions about it in the Cloud Identifier tool and we’ll tell you which it is likely to be, or use our new CloudSpotter AI to see which of the ten main cloud types our automatic system thinks you are spotting.

And if you’re a subscribing member of the Cloud Appreciation Society you will be able to log in to access your Cloud-a-Day emails. These feature photographs by Cloud Appreciation Society members of amazing formations around the world, short pieces of cloud science, inspiring sky quotations, and details of the sky in art.

With Cloud-a-Day, looking up will never be the same again!

Ratings and reviews

Only my first spotting is listed in my collection. Every time I spot a new one it says cloud spotted but never saves it. I really want to like this app, I think it has the potential to be awesome. My suggestions: -Fix spottings -Add camera controls like zoom within the app -Make it interactive between users so you can see other people's spottings, where it was, comment, and help identify (like on iNaturalist)

A really excellent cloud identification app. The best I have seen so far. Not only are the common clouds pictured and discussed but also the more rare which aren't on other apps. First rate app.

If you like directing your gaze to the ever-changing panorama of the sky, this is for you. Three great parts to this App: cloud image every day from all over the world; cloudspotter AI if you don't know the type of cloud you're seeing in real time; cloud library to learn how many kinds there are. Enjoy!

What's new

New features:
• Delete unwanted spottings
• Swipe between your spottings
• Jump from a spotting to the relevant entry in the Cloud Library
• Performance improvements and fixes