Comparison

SLSL Dictionary vs TWA Dictionary

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SLSL Dictionary

Learn sign language with definitions and videos for each sign. Save custom word lists and use flashcards with spaced repetition for effective revision. Supports English, Sinhala, and Tamil.

Highlights
  • Video demonstrations for signs
  • Custom word list saving
  • Flashcard revision feature
  • Spaced repetition learning
  • Support for English, Sinhala, and Tamil
Features
Read full description

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.

About

TWA Dictionary

Master American Sign Language with a comprehensive dictionary featuring over 25,000 signs, variations, and cultural insights. Created by a Deaf team, it offers thematic organization, user-driven content requests, and regular updates for an enhanced learning experience.

Highlights
  • Over 25,000 ASL signs
  • Sign variations and cultural insights
  • Thematic organization
  • User-requested content
  • Continuous updates
  • Educational blog on Deaf Culture
Features
Read full description

Looking for a great ASL resource? Our ASL Dictionary, created by a 100% Deaf team, includes over 25,000 signs along with sign variations, Deaf signers from diverse backgrounds, and an array of features to enhance your learning experience! What’s the Sign? ASL Dictionary is your ultimate resource for mastering American Sign Language, designed and brought to you by the Deaf community. Key Features: Extensive Library: Access a comprehensive collection of over 25,000 signs, including regional variations and cultural insights. Thematic Organization: Easily navigate through themed categories tailored to your interests. Tagged for Every Occasion: Quickly find the signs you need, whether for a job interview or a specific topic. Continuous Updates: Regular updates ensure fresh and relevant content. Educational Blog: Explore Deaf Culture with insightful posts on community topics. User-Driven Content: Can’t find a sign? Request new signs or sentence examples, and help expand the dictionary. Easy Navigation: An intuitive interface makes your learning journey smooth and enjoyable. Subscription Details: What’s the Sign? ASL Dictionary offers flexible subscription plans, including monthly and annual options. Start your learning journey with a three-day free trial. Subscriptions automatically renew unless canceled, and you can manage them through your account settings. Discover the richness of American Sign Language with What’s the Sign? ASL Dictionary – where learning becomes a personalized, ongoing experience. Privacy Policy: https://twadictionary.com/privacy/ Terms of Use: https://twadictionary.com/terms/ Also available in the app.

Screenshots

SLSL Dictionary4 screens
TWA Dictionary4 screens

Verdict

The call

The clearest difference is rating: SLSL Dictionary at 5.0 against TWA Dictionary's 4.3. SLSL Dictionary also leads on in-app purchases (none vs 5) and review sentiment (100% vs 77%). TWA Dictionary's advantage is ratings volume (33 vs 2). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. TWA Dictionary sells 5 in-app purchases, starting at $4.99 per month. SLSL Dictionary asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SLSL Dictionary holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: TWA Dictionary has 33 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of SLSL Dictionary's written reviews are positive against 77% of TWA Dictionary's.

UpkeepUpdate frequency

SLSL Dictionary ships an update every 5 days, TWA Dictionary every 3 weeks. Both last shipped on November 3, 2026.

Scorecard6 real differences · 4 level
SLSL Dictionary versus TWA Dictionary: the parameters behind the verdict, then further details
ParameterSLSL DictionaryTWA Dictionary
PriceFreeFree
Rating5.0 (2 ratings) — better4.3 (33 ratings)
Positive reviews100.0% of reviews — better76.9% of reviews
Number of ratings233 — better
Update frequencyEvery 5 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size52 MB41 MB
Age rating4+12+
DeveloperDaniel PorteousTWA Innovations LLC

Customer experience

SLSL Dictionary

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

TWA Dictionary

All ratings33 ratings
Positive78.8%
Neutral6.1%
Negative15.2%
Written reviews13 reviews
Positive76.9%
Neutral0.0%
Negative23.1%

In-app purchases

None

SLSL Dictionary

No in-app purchases

5 purchases

TWA Dictionary

Subscriptions2
  • Pro Monthly3 Days trial$4.991 Month
  • Pro Yearly3 Days trial$49.991 Year
One-time3
  • Gift Code Month$4.99
  • Gift Code 6 Months$29.99
  • Gift Code 1 Year$49.99

Questions

Is SLSL Dictionary free?
SLSL Dictionary is free to download, with no in-app purchases.
Is TWA Dictionary free?
TWA Dictionary is free to download, with in-app purchases available.
Which has better reviews, SLSL Dictionary or TWA Dictionary?
SLSL Dictionary is rated higher. SLSL Dictionary averages 5.0 out of 5 from 2 ratings, while TWA Dictionary averages 4.3 from 33 ratings.
Do SLSL Dictionary or TWA Dictionary have ads?
Neither SLSL Dictionary nor TWA Dictionary shows ads.
Which is updated more often, SLSL Dictionary or TWA Dictionary?
SLSL Dictionary ships an update every 5 days, and TWA Dictionary every 3 weeks. Most recently, SLSL Dictionary was updated on November 3, 2026 and TWA Dictionary on November 3, 2026.

Other comparisons