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SPECIFICTION
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Sign ASL

signasl.org

Free plan WebiOSAndroid
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Spec score 7.7 #19 of 34 in Sign Language Apps

What it is

Sign ASL is a free service for searching and comparing American Sign Language words and phrases. Its library lists more than 40,000 video signs contributed by more than 150 signers. Users can search for signs, compare variations, and access videos on the web or through Android and iOS apps. Multiple signs for one word may reflect different meanings or regional variations. The iOS app includes recent and popular signs, looping playback, navigation between alternatives, favorites with offline viewing, dark mode, and offline startup improvements. The mobile apps do not require an account, registration, login, or personal profile. Search terms are sent to Sign ASL servers, where requests are logged anonymously for service improvement. The apps use Google AdMob ads and may process basic device information; Sign ASL says it does not sell personal user data or perform cross-app behavioral tracking. Dictionary and word-definition information comes from WordNet by Princeton University. The service is built for learners, teachers, and the Deaf community.

Spec sheet

Purpose
Sign ASL lets users search and compare thousands of American Sign Language words and phrases.Read 30 Sep 2026 · signasl.org
Audience
Sign ASL is built for learners, teachers, and the Deaf community.Read 30 Sep 2026 · signasl.org
Mobile apps
Sign ASL is available on Android and iOS for searching, comparing, and viewing the site's video signs, with free downloads.Read 30 Sep 2026 · signasl.org
Headquarters
Northampton, United KingdomRead 28 Sep 2026 · signasl.org
Account requirement
The iOS and Android apps require no account, registration, login, or personal profile.Read 30 Sep 2026 · signasl.org
Advertising
The mobile apps use Google AdMob ads, may process basic device information, and state that Sign ASL does not sell personal user data or perform cross-app behavioral tracking.Read 30 Sep 2026 · signasl.org
Analytics
The website uses Google Analytics and describes the visitor information as anonymous.Read 30 Sep 2026 · signasl.org
Contributors
The video signs are contributed by more than 150 signers.Read 30 Sep 2026 · signasl.org
Core features
The service provides quick search, sign variation comparison, and mobile learning access.Read 30 Sep 2026 · signasl.org
Data handling
App search terms are sent to Sign ASL servers and search requests are logged anonymously for service improvement.Read 30 Sep 2026 · signasl.org
Definitions
Dictionary and word-definition information comes from WordNet by Princeton University.Read 30 Sep 2026 · signasl.org
Infrastructure
The service is powered by Cloudflare and AWS Lambda, Lightsail, API Gateway, S3, and RDS.Read 30 Sep 2026 · daniel-mitchell.com
iOS features
The iOS app supports recent and popular signs, looping playback, alternative-sign navigation, favorites with offline viewing, dark mode, and improved offline startup.Read 30 Sep 2026 · daniel-mitchell.com
Sign variation
Multiple signs for one word can reflect different meanings or regional variations.Read 30 Sep 2026 · signasl.org
Video library
The site lists more than 40,000 video signs.Read 30 Sep 2026 · signasl.org
Video sources
Videos come from sources including StartASL, SMARTSign Dictionary, Elemental ASL Concepts, DeafTec, SignSchool, ASL Signbank, and Project CLIMB.Read 30 Sep 2026 · signasl.org

Plans and prices

Free Free 40,000+ video signs · 150+ contributing signers · unlimited access Read 30 Sep 2026 · signasl.org

Every Sign ASL plan and price →

Strong points and limits

Strong points

  • More than 40,000 video signs are listed.
  • Signs come from more than 150 contributors.
  • Available on web, Android, and iOS.
  • iOS favorites support offline viewing.
  • No account or login is required for the apps.

Limits

  • Search terms are sent to Sign ASL servers.
  • Mobile apps use Google AdMob ads.
  • Basic device information may be processed by the apps.

Who it suits

Sign ASL suits ASL learners and teachers who want to search and compare video signs, and members of the Deaf community. Its web and mobile access also supports learning away from a desktop, with offline favorites in the iOS app.

Verdict

Sign ASL offers a free video dictionary with search and sign-variation comparison across web and mobile. Users should note that app searches are sent to the service and the mobile apps include advertising.

Where Specifiction places it

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