iPhone Screenshots


Atoll is a living library of saltwater coral. Atoll can help you identify photos of coral. Browse through beautiful coral images to find new ones that might fit well in your reef tank, or get information on coral you already own.

Each coral page in the library has scientific info as well as important hobby information about what conditions are necessary to keep the coral healthy.

Own a coral, but don’t know which one it is? Submit a photo of your coral for other Atoll users to help identify. Once your coral is identified, you can tap your submission to see the library page for that coral. You can also help other users identify the corals they have submitted.

What’s New

Version 1.1.0

We hope you're enjoying Atoll. We're working on getting more photos and more coral. We're also working on some great new things this year. Follow us on Twitter, Instagram, and Facebook to get more news. They're all available from Settings in the app. :)

If you like Atoll, please consider leaving us a review. They really help boost our spirits and our ranking.

New: Search! We know you've been asking for it and we finally got in. You can search by Scientific or Common name.

New: iOS 10 Support. Its not glamorous but it is functional. The new app will work better with iOS 10.

New: HomeScreen Shortcuts. Jump right into a new submission from the homescreen with a quick press on the Atoll icon.

New: Language Support for Spanish and Portuguese.

Improved: Your submissions page has been revamped. It will now should you votes on your submissions as you get them.

Fixed: Species pages can now handle multiple lines. Great for those few coral with a bunch of common names. No longer will they be cut off!

You can always send us emails at contact@atollapp.io with suggestions or problems. We love hearing from you.

Ratings and Reviews

3.3 out of 5
7 Ratings

7 Ratings

SwigtySwag1823 ,

Has a lot of potential

Small user base as of this review. Has potential to be a great resource for beginners and experts alike in the hobby. Clean interface, detailed descriptions for each species. Would recommend adding a forum component to discuss ranges/ values that are successful for each coral. Also, would not be a bad idea to partner with one of the large coral companies such as WWC or UC to add more photos, descriptions, etc.

ShaiNoel ,

Reef Comunity Support

This app would be amazing if more people would submit their photos of corals, so the library would be complete! All of the scientific names are in order, but many corals do not include a picture identification. That and the fact that they are all labeled by the long scientific names (most of which I was unfamiliar with as a hobbyist) makes it a bit difficult to figure out what you are looking for. So reefers, submit your photos!

GDG in Vermont ,

Very nice resource for the aquarist

This app supplies pictures and some requirements for coral. Very nice to use in stores to check on potential purchases. Still limited on amount of information available but is growing. Have high hopes for this.


Frozen Fire Studios, Inc.
28.1 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Portuguese, Spanish

Age Rating
Rated 4+
© Frozen Fire Studios, Inc.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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