# Koko Signs > App detailing a long-term study of gorilla communication and behavior. (iPhone/iPad app by The Gorilla Foundation.) - Source: https://appshunter.io/ios/app/koko-signs/id6469710925 (this page in markdown: same URL + `.md`) - Developer: [The Gorilla Foundation](https://appshunter.io/developer/1688589176) - Category: Entertainment, Education - Price: Free - Rating: 5.00/5 from 4 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 51 MB - Languages: English - Released: 2023-12-27 - Data updated: 2026-08-09 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/koko-signs/id6469710925/reviews.md ## What is Koko Signs? The Gorilla Foundation is best known for conducting the longest interspecies communication study in history (almost 5 decades) and the only one involving gorillas: Project Koko. ## Key features - Interspecies communication study - Focus on gorillas - Project Koko details - Long-term research insights - Educational content ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/koko-signs/id6469710925/reviews.md ### 5/5 — A portal to 5 decades of interspecies communication *2024-11-24* best way to stay in touch with "fine animal gorilla" Koko. ### 5/5 — What a gift! *2024-04-22* The app is a beautiful gift to anyone interested in Koko the Gorilla of wanting to learn some basic sign language. Video clips demo both Koko’s version of signs but also the American Sign Language versions as well. Besides that we’re able to read various books like Koko’s Kitten and Michael’s Dream. ## Frequently asked questions about Koko Signs ### What is Koko Signs about? Koko Signs details the longest interspecies communication study in history, focusing on gorillas and Project Koko. It provides insights into the research conducted by The Gorilla Foundation. ### Is Koko Signs free to download? Yes, Koko Signs is available for free on the App Store. It does not have any in-app purchases or advertisements. ### What devices does Koko Signs support? Koko Signs is currently supported on iPhones. The app is designed for iOS devices. ### What is the age rating for Koko Signs? Koko Signs has an age rating of 4+. This indicates it is suitable for children and adults. ### When was Koko Signs last updated? The latest version of Koko Signs was updated on March 18, 2025. The app was initially released on December 27, 2023. ### What kind of content can I expect in Koko Signs? You can expect educational content about the Project Koko study, which explored interspecies communication with gorillas. It offers a deep dive into the research and findings. ### Who developed Koko Signs? Koko Signs was developed by The Gorilla Foundation, the organization best known for its extensive research into gorilla communication. ### How often is Koko Signs updated? The app received its latest update on March 18, 2025, indicating active development and support from the developer. ## Version history (last 5 releases) ### 1.2.1 — 2025-03-18 * Subscribe now to get monthly insights about Koko, gorilla life, conservation, and sign language directly from Dr. Penny Patterson and The Gorilla Foundation team * Share Signs: Spread the joy of learning! Now, you can easily share your favorite sign videos with family and friends through messages or social media ### 1.2.0 — 2024-10-17 - Simplify the options to download the content - Minor improvements ### 1.1.1 — 2024-09-17 Minor bug fix ### 1.1.0 — 2024-09-09 We’re excited to bring you the latest update for Koko Signs! - New KokoGrams: Sharing the signs you’ve been learning with Koko on social media has been easier! - Offline Mode: Poor Internet connection? No problem! You can now download the content to access it anytime, anywhere. Remember to stay connected whenever possible for new content updates and support The Gorilla Foundation. Update now and enjoy these enhancements! ### 1.0.3 — 2024-08-20 This minor release brings a few key enhancements to improve your app experience: 1 - Filters for Conversations: You can now filter the conversation videos, making it easier than ever to find what you’re interested to learn 2 - Video Tutorials: We’ve added video tutorials to help you navigate and use the app more effectively. Learn how to make the most of Koko Signs with these handy guides. 3 - Landscape View Shortcut: Watching signs and conversations in landscape view? We’ve introduced a shortcut to quickly return back, enhancing your viewing experience. As always, we’re committed to improving Koko Signs and appreciate your feedback. Enjoy the new features! ## Apps similar to Koko Signs | App | Rating | Price | Category | | --- | --- | --- | --- | | [Evolve Plus](https://appshunter.io/ios/app/evolve-plus/id6446369289) | 4.9 (1,172) | Free | Entertainment | | [The Network TV](https://appshunter.io/ios/app/the-network-tv/id6476564624) | 2.7 (61) | Free | Entertainment | | [AARP Streams](https://appshunter.io/ios/app/aarp-streams/id6478783012) | 2.3 (27) | Free | Entertainment | | [Skoob: TrueCrime Stories](https://appshunter.io/ios/app/skoob-truecrime-stories/id6473138854) | 4.5 (92) | Free | Entertainment | | [Filoli](https://appshunter.io/ios/app/filoli/id6474118604) | 4.9 (306) | Free | Entertainment | | [USA News Updates](https://appshunter.io/ios/app/usa-news-updates/id6743963063) | 4.5 (369) | Free | Entertainment | ## More apps by The Gorilla Foundation - [Koko Signs - Special Edition](https://appshunter.io/ios/app/koko-signs-special-edition/id6462937246) All apps by The Gorilla Foundation: https://appshunter.io/developer/1688589176 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-09.*