Comparison

TWA Dictionary vs SignLexicon

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

Head to head
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.

About

SignLexicon

This app offers a comparative dictionary between Italian Sign Language (LIS) and American Sign Language (ASL). It features side-by-side video comparisons of signs and alphabetic search in Italian or English, serving as a valuable educational tool for language learners.

Highlights
  • LIS and ASL sign comparison
  • Side-by-side video playback
  • Alphabetic search (Italian/English)
  • Extensive sign entry database
  • Educational teaching aid
Read full description

SignLexicon is a comparative dictionary between Italian Sign Language (LIS) and American Sign Language (ASL). It has been developed as a teaching aid within the LILS project to experiment Italy's first bachelor's degree for Sign Language International Mediators. The project has been co-funded by the Italian Ministry for Universities and it is led by a partnership of the University of Parma (project leader), OSSMED Ets (coordinator) and SSML San Domenico University College in Fermo (executor). SignLexicon 1.0 includes around 3,200 entries: 800 LIS signs and their written Italian equivalent, and 800 ASL signs with their written English equivalent. This freeware is available on the main operating systems for smartphones and tablets. The users can either watch one sign language video at a time or both simultaneously by using both windows side by side. This will help them immediately notice the differences between LIS and ASL. They can also choose to use an alphabetic search in Italian or English. SignLexicon 1.0 will be followed by an updated and expanded version in the near future.

Screenshots

TWA Dictionary4 screens
SignLexicon4 screens

Verdict

The call

The clearest difference is rating: SignLexicon at 5.0 against TWA Dictionary's 4.3. SignLexicon also leads on in-app purchases (none vs 5) and iOS requirement (8.0 vs 15.1). TWA Dictionary's advantage is ratings volume (31 vs 1) and update cadence (every 3 weeks vs every 3 months). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

SignLexicon holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: TWA Dictionary has 31 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

TWA Dictionary ships an update every 3 weeks, SignLexicon every 3 months. The most recent releases landed on September 21, 2026 and June 1, 2026 respectively.

Scorecard6 real differences · 4 level
TWA Dictionary versus SignLexicon: the parameters behind the verdict, then further details
ParameterTWA DictionarySignLexicon
PriceFreeFree
Rating4.3 (31 ratings)5.0 (1 ratings) — better
Positive reviews76.9% of reviews—
Number of ratings31 — better1
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.18.0 — better
Further details — not scored
Size41 MB48 MB
Age rating12+4+
DeveloperTWA Innovations LLCUbisive S.r.l.

Customer experience

TWA Dictionary

All ratings31 ratings
Positive80.6%
Neutral3.2%
Negative16.1%
Written reviews13 reviews
Positive76.9%
Neutral0.0%
Negative23.1%

SignLexicon

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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
None

SignLexicon

No in-app purchases

Questions

Is TWA Dictionary free?
TWA Dictionary is free to download, with in-app purchases available.
Is SignLexicon free?
SignLexicon is free to download, with no in-app purchases.
Which has better reviews, TWA Dictionary or SignLexicon?
SignLexicon is rated higher. TWA Dictionary averages 4.3 out of 5 from 31 ratings, while SignLexicon averages 5.0 from 1 ratings.
Do TWA Dictionary or SignLexicon have ads?
Neither TWA Dictionary nor SignLexicon shows ads.
Which is updated more often, TWA Dictionary or SignLexicon?
TWA Dictionary ships an update every 3 weeks, and SignLexicon every 3 months. Most recently, TWA Dictionary was updated on September 21, 2026 and SignLexicon on June 1, 2026.

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