Sign ASL vs SLSL Dictionary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sign ASL
Access a comprehensive ASL sign dictionary with thousands of words and phrases. This app provides easy access to over 20,000 video demonstrations of American Sign Language signs directly on your mobile device.
- Searchable ASL dictionary
- Thousands of words and phrases
- Over 20,000 video demonstrations
- Mobile access to signs
- Compare ASL signs
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Search and compare thousands of words and phrases in American Sign Language. Easily find and view signs on your mobile device. Over 20,000 videos in this video dictionary. For more information please visit www.signasl.org
SLSL Dictionary
Learn Sri Lankan Sign Language with a comprehensive video dictionary. Access over 2,300 signs and 475 phrases, with detailed definitions and regional variants. Features include fingerspelling, customizable lists, and flashcards for effective learning.
- Extensive video library of signs and phrases
- Fingerspelling for multiple alphabets
- Multilingual support (English, Sinhala, Tamil)
- Detailed definitions and regional variants
- Adjustable video playback speed
- Customizable sign lists and flashcards
- Offline access to downloaded content
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SLSL Dictionary is a free video dictionary of Sri Lankan Sign Language (SLSL), the sign language of the Deaf community in Sri Lanka. Search for a word, open it, and watch a video of the sign. • More than 2,300 signs and 475 everyday phrases, with over 4,400 videos • Fingerspelling for the English, Sinhala and Tamil alphabets • Every entry has its English, Sinhala and Tamil words, and the app itself is available in all three languages • Definitions, notes and related signs, plus regional variants such as the signs used in the North East • Slow a video down to follow the handshape and movement • A new sign of the day • Save signs to your own lists, and share a list with classmates or students • Revise with flashcards, sign to word or word to sign, using random or spaced-repetition review • Light and dark themes • Also on the web at app.srilankansignlanguage.org For Deaf and hard of hearing people, their families and friends, teachers, interpreters, and anyone learning Sri Lankan Sign Language. Free, with no ads, no subscriptions and no in-app purchases. Searching and browsing work offline once the dictionary has downloaded; videos stream, and the ones you have watched recently are kept on your device. The sign videos, images and definitions are provided by Nishani Shamila McCluskey and team, and are licensed under Creative Commons BY-NC-ND 4.0. New and updated entries reach the app automatically.
Screenshots
Verdict
The clearest difference is rating: SLSL Dictionary at 5.0 against Sign ASL's 4.1. SLSL Dictionary also leads on review sentiment (100% vs 63%) and ads (none vs shown). Sign ASL's advantage is ratings volume (90 vs 2) and iOS requirement (13.0 vs 16.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SLSL Dictionary holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Sign ASL has 90 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 63% of Sign ASL's written reviews are positive against 100% of SLSL Dictionary's.
Sign ASL ships an update every 37 months, SLSL Dictionary every 5 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Sign ASL | SLSL Dictionary |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (90 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 62.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 90 — better | 2 |
| Update frequency | Every 37 months | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 3 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Mitchell | Daniel Porteous |
Customer experience
Sign ASL
SLSL Dictionary
Bugs and requests
Sign ASL
Reported bugs
21 issues- Videos do not play
- Video player covers signs
- App crashes before loading
- Play button covers signs
- Icons on top of video
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- Videos play too fast
- Formatting problems
- Difficulty viewing signed examples
- Video player updated unhelpfully
- Sign videos are only a few seconds long
- Controls for video were at the bottom of the screen
- Videos are really hard to see what fingers they are using
- View of the hands signing is blocked by the play button
- Bug fix needed
- Icons for play, back and forward is right on top of the video
- Play and stop is on top of the video so you can’t see the sign
- Can’t make video zoom in or out
- Slur appears in search results
- App kicks me out before it even loads
- One of the signs is very wrong
- Using videos without permission
Requested features
8 requests- Playback option to slow down videos
- Button to make video slow down
- Color tape on fingers for clarity
- Option to save signs for later
- "My signs" section
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- "Frequently used" section
- Ability to zoom in/out on videos
- Simple combinations and other gestures
SLSL Dictionary
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sign ASL
No in-app purchases
SLSL Dictionary
No in-app purchases
Questions
Is Sign ASL free?
Is SLSL Dictionary free?
Which has better reviews, Sign ASL or SLSL Dictionary?
Do Sign ASL or SLSL Dictionary have ads?
Which is updated more often, Sign ASL or SLSL Dictionary?
Other comparisons
