Sign ASL review
A free ASL reference tool with video lookup, variations, categories, and iOS favorites offline.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Sign ASL is a free American Sign Language video dictionary for learners, teachers, and the Deaf community. It supports searches for words and phrases, sign comparisons, video reference, alphabetical browsing, and category browsing across the web, iOS, and Android. The website describes a dictionary with more than 40,000 video signs and unlimited free access, making it suited to people who want a reference library rather than a paid course. Its focus is ASL, with video as the lesson format and dictionary lookup as the central use case.
The product’s main strength is the range of lookup tools available without a paid tier. Users can search words and phrases, compare sign variations, browse alphabetically or by category, and adjust video playback speed. Those controls support quick reference and closer comparison when a single word has multiple signs. The free Android and iOS apps extend the same core functions beyond the website, while the iOS app adds offline viewing for favorite signs. That combination fits learners and teachers who need recurring access to selected references, as well as members of the Deaf community looking up signs.
Sign ASL is less suitable for buyers seeking a structured learning path. The published description presents it as a dictionary rather than a course platform, and its stated feature set does not include lessons, exercises, or progress tracking. Offline access is also narrower than a full offline dictionary: the iOS app supports favorite signs offline, while the broader service centers on online video lookup. Choose Sign ASL for free, cross-platform ASL reference with variations and playback controls. Choose another tool if guided instruction, practice activities, or tracked learning progress matters more than searchable video references.
Sign ASL pros and cons
- Where it wins
- Free access across web, iOS, and Android
- Search, compare, and watch ASL signs with playback controls
- Save favorite signs for offline viewing in the iOS app
- Where it doesn't
- Focused on dictionary lookup rather than structured lessons
- Exercises and progress tracking are not part of the product
- Offline access applies to iOS favorites, not the full dictionary
Sign ASL fact sheet, pricing and score →
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