Koko Signs

An app to learn sign language from Koko the gorilla and help great apes.

A gorilla sits amidst thick, lush greenery, partially obscured by leaves and plants in a forest environment, just like the intuitive nature within the Koko signs app by ArcTouch.
A gorilla sits amidst thick, lush greenery, partially obscured by leaves and plants in a forest environment, just like the intuitive nature within the Koko signs app by ArcTouch.
A gorilla sits amidst thick, lush greenery, partially obscured by leaves and plants in a forest environment, just like the intuitive nature within the Koko signs app by ArcTouch.
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Summary

The Gorilla Foundation and ArcTouch created an app to help continue the legacy of Koko, the western gorilla who learned to sign over 1000 words from Dr. Penny Patterson.

This cross-platform Flutter app helps people learn sign language through hundreds of hours of sign-language words and conversations from Koko, Penny, and others.

Learn to sign like Koko

See Koko sign with Dr. Penny Patterson and celebrities. Read books about Koko, with links to individual sign videos.

Help the Gorilla Foundation

See historical clips from the Gorilla Foundation team. Learn how to help endangered gorillas and carry on Koko’s legacy.

Send KokoGrams

Create sign language video messages from Koko and share with friends and family to help spread the word.

Highlights

See gorilla signs and ASL equivalents

Watch videos and read stories about Koko

Apple Pay and Google Pay integration makes donations to The Gorilla Foundation simple

Cross-platform Flutter app for iOS and Android

Contentful headless CMS integration allows The Gorilla Foundation to easily add new content

Accessible design and development

Cross-platform

Flutter app for iOS and Android

Headless CMS

Contentful integration

Accessible

Inclusive design and development

a young Koko the gorilla handing a small pink flower to Dr. Penny Patterson
“ArcTouch’s careful and expert work to create a lovable learning experience will play a crucial role in carrying on Koko’s legacy for the next generation.”

Dr. Penny Patterson — President of The Gorilla Foundation/Koko.org

Koko signs app by ArcTouch screen displays a nature conversation app with an image of a gorilla and a search bar at the top.Koko Signs app screen displays a video of a gorilla named Koko. There are options below including videos and related clips.A mobile phone screen displaying the Koko Signs app with a pink theme. The app shows a list of four books with their cover images, titles, authors, and short descriptions. The top bar reads "Books".
Dr. Penny Patterson sits on the floor between two gorillas, engaging with them in a room with chain-link fencing in the background.

Insights from our big brains

Best practices and forward-thinking ideas for strategy, design, and technology on our blog.

a young Koko the gorilla handing a small pink flower to Dr. Penny Patterson

Industry News

Koko Signs: An interview with Dr. Penny Patterson

5 min. read - January 11, 2024

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Development

How to choose a headless CMS

4 min. read - March 8, 2023

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8 myths about app accessibility

5 min. read - April 2, 2024

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Image Attribution

1

Images from The Gorilla Foundation

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