DEF-ISL

3.0.9

SriJay Software Solutions Pvt Ltd

4.58

3,729 reviews

100,000+
Downloads

Free

Indian Sign Language

4.58 · 3,729 reviews · 100,000+ downloads

Download from Google Play

DEF-ISL helps learners master Indian Sign Language with a library of 50,000+ signs and in-built videos and illustrations. Developed by SriJay Software Solutions, the education app targets both adults and children for accessible, practical sign-language learning in EDUCATION. It combines a strong rating (4.58 from 3,720 ratings) with a substantial user base, totaling 100,000+ downloads and 3.3K in the last 30 days.

Pros & Cons

Vast library of signs (50k+) for broad learning
In-built videos provide visual demonstrations
User-friendly design suitable for adults and children
Free to download and start learning

Limited text-based translation or captioning features compared with some competitors
Less emphasis on community or live interaction features
Content focuses on signs and videos; fewer interactive learning modes are mentioned

About DEF-ISL

DEF-ISL is an education app developed by SriJay Software Solutions Pvt Ltd.

How many times has DEF-ISL been downloaded?

DEF-ISL has been downloaded 400 thousand times. In the last 30 days, the app was downloaded 3.3 thousand times.

What is the rating of DEF-ISL?

DEF-ISL is rated 4.58 out of 5 stars, based on 3.7 thousand ratings.

Is DEF-ISL free?

DEF-ISL is free to download. The APK download size is 8.53 MB. The latest version available is 3.0.9. The last update was on February 9, 2026.

What are the requirements for DEF-ISL?

DEF-ISL requires Android 4.2+ or higher. The app has a content rating of Everyone. The app has been available on Google Play July 2018.

Description

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.

Recent changes:
Performance Improvements

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More data about DEF-ISL

Price	Free to download
Total downloads	400 thousand
Recent downloads	3.3 thousand
Rating	4.58 based on 3.7 thousand ratings
Ranking	Not ranked
Version	3.0.9
APK size	8.53 MB
Number of libraries	34
Designed for Android	4.2+
Suitable for	Everyone
Ads	Contains ads

App Performance Report

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Alternative downloads for the DEF-ISL app

DEF-ISL compared with similar apps

Common keywords of similar apps

Def Isl Adults Children Reach Deaf App Sign Language Easy Hearing

Keywords missing from this app

Asl Text Community Communication Free Video Learning Voice Speech Recent Calls Bible Dictionary Features Rylo People Phone Express Signs Communicate Call Live Chat American Learn Videos Content Interpreting Hard Experience Service Resources Elioz Friends Time Access Users Captions User Feature Find Subscription Inclusive Real

Google Play Rating history and histogram

Rating history

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360

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120

Downloads over time

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DEF-ISL has been downloaded 400 thousand times. Over the past 30 days, it averaged 110 downloads per day.

Changelog of DEF-ISL

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Developer information for SriJay Software Solutions Pvt Ltd

SriJay Software Solutions Pvt Ltd

info@def.org.in

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Comments on DEF-ISL for Android

★★★★★ Dnyaneshwar Athargan · May 30, 2025

Whenever there's a communication barrier, people usually write or try to talk to us in English. I used to struggle to understand those sentences, but now things have changed. I just look up the word in the app, and it's that easy to learn something new!

★★★★★ vaithynathan Nathan · Jul 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 to research 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, it's a LOOF help. It makes feel me happy because I'm showing improvement in my communication. Thank you so much for deaf enabled foundation.

★☆☆☆☆ Prawjal · Jan 26, 2026

I've experienced felt worse there updated not good and issues a lot of face barriers. I felt so better experienced 2019-2020 the def isl better comfortable and seems to learn. Not good now

★☆☆☆☆ Yadhav Vakkath · Jun 3, 2025

I am trying to open the app, I don't get the OTP my email ID, I wait the app of def -isl Can you please help me with this

★☆☆☆☆ Vivek Tavildar · Jul 15, 2026

I am confused because the search dictionary does not find any words.

★☆☆☆☆ Gourav RoR · Jul 4, 2025

Gmail code again bad. Search fail bad. Def isl was old Good

Google Play Rankings for DEF-ISL

This app is not ranked

Technologies used by DEF-ISL

10 permissions · 34 libraries

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Trust & Safety: Permissions indicate ad identifiers and standard networking needs (ACCESS_ADSERVICES_AD_ID, ACCESS_ADSERVICES_ATTRIBUTION, ACCESS_ADSERVICES_TOPICS, INTERNET, ACCESS_NETWORK_STATE) plus foreground service and wake lock usage. A dynamic receiver is listed as not exported. No sensitive data permissions (e.g., contacts, location) are listed in the provided data, suggesting standard monetization and background operation without exposed personal data access.

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