4.5
3.63K reviews
100K+
Downloads
Content rating
Everyone
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About this app

The DEF-ISL app makes learning of sign language easy, accessible and interesting. Packed with 50000+ easy-to-understand signs and phrases, in-built videos, illustrations, this easy to navigate app can be used both by adults and children who are deaf or hearing impaired. The customized mobile app is available for download on iOS and Android platforms.

DEF-ISL offers the opportunity for all to learn sign language and thereby reach out to the deaf more easily.

DEF is an organization made of the deaf, for the deaf, by the deaf, focused on addressing the issues of communication for the deaf and developing methods and resources to improve their connect with the society at large. They aim to make a lasting impact on the future of thousands of deaf or hard of hearing children and adults by providing them access to early identification, hearing technology and expertise to reach their full potential.

2019-2020 app initiative supported by L&T Construction.
Updated on
Sep 19, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.5
3.6K reviews
Rahul Gupta
June 28, 2025
I’m very happy with the DEF ISL app because it introduces new English words. My friend writes to me in English, but I didn’t know the language before. This app has really helped me understand and gain access to English. Without it, I wouldn’t have been able to benefit from learning the language. I want to keep learning and improving myself. Thank you to the DEF team!
13 people found this review helpful
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vaithynathan Nathan
July 3, 2025
Hello. I feel like i learn new words with this def isl app. I think it's important for me to utilize for my learning. It helps me researching new words meanings in Indian Sign Language. I had many issues and experiences in facing communication barriers with my friends and family etc. I didn't know writing skills, English and communication. it has access , its a lotof help. It make feel me happy because I'm showing improvement in my communication. Thank you so much for deaf enabled foundation.
19 people found this review helpful
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agudu siddu
July 3, 2025
It helps communicating with my family.. I am deaf and my family is hearing, before the app I couldn't express myself at all. Now I know how to tell what I want.. and even if I forget I can keep practicing with the app. I'm also learning English basics with the app. Thanks for this! 🙂⭐⭐⭐⭐⭐
2 people found this review helpful
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What’s new

Bug fixes