The Iglesia Ni Cristo Sign Language App is an Android-based sign language learning application designed by the Christian Society for the Deaf under the Christian Family Organizations Office of the Iglesia Ni Cristo (Church Of Christ). This free app is a part of the Church's efforts to reach out to and support the Deaf community, both INC members and non-members.

The app boasts over 8000 vocabulary entries, all in video format, and includes everyday signs such as the alphabet, numbers, colors, greetings, and more. The app features a user-maintainable favorites category, examples of signed phrases and sentences, fast search and voice search, customizable video playback speeds, and a video auto-loop option. Most importantly, all features are available offline, making it convenient for users to learn sign language anytime and anywhere.