Comparison

International Sign Language vs SLSL Dictionary

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

Head to head
About

International Sign Language

Learn International Sign Language to communicate with the deaf community globally. This app helps bridge communication gaps, fostering confidence and social inclusion for individuals with hearing impairments. It's designed for anyone wanting to learn this visual language.

Highlights
  • Global communication with hearing impaired
  • Learn visual language
  • Improve social inclusion
  • Develop self-confidence
  • Bridge communication barriers
  • Suitable for all ages
Features
Read full description

With International Sign Language, it is possible to communicate with the hearing impaired not only in any country but also all over the world. International Sign is a language which is used in a variety of different contexts, particularly at international meetings such as the World Federation of the Deaf congress, events such as the Deaflympics and the Miss & Mister Deaf World, and informally when travelling and socialising. Communication difficulties and emotional problems experienced by the hearing impaired can cause a lack of self-confidence in their social lives. All these negative effects of hearing loss also affect the quality of life of the child and the individual. As the number of people communicating with the Hearing Impaired and learning sign language increases, it will be much easier for individuals with speech and hearing impairments to establish a bond of belonging to the society, develop their self-confidence, and find a place for themselves in society and social life. Hearing and speaking individuals will be able to learn sign language and it will help the Hearing Impaired to overcome the communication barrier in front of them. Hearing and speaking individuals, by learning sign language, will help the deaf overcome the barrier of communication and improve their daily quality of life in terms of courtesy, respect, family, friends, school and work. What is Sign Language? Sign language is a visual language created by hearing impaired people using hand movements and facial expressions when communicating with each other. Feedback We will continue to evaluate and update it, taking into account all kinds of feedback and suggestions from you. If you have suggestions or feedback, you can reach us in the feedback section in the application. Wishing you can learn sign language We wish you a nice day.

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.

Screenshots

International Sign Language4 screens
SLSL Dictionary4 screens

Verdict

The call

The clearest difference is in-app purchases: SLSL Dictionary at none against International Sign Language's 4. SLSL Dictionary also leads on update cadence (every 5 days vs every 20 months). International Sign Language's advantage is iOS requirement (13.4 vs 16.0). On price, rating, ratings volume and ads 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. International Sign Language sells 4 in-app purchases, starting at $5.99 per 3 months. SLSL Dictionary asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for International Sign Language against 5.0 for SLSL Dictionary. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

International Sign Language ships an update every 20 months, SLSL Dictionary every 5 days. The most recent releases landed on October 24, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
International Sign Language versus SLSL Dictionary: the parameters behind the verdict, then further details
ParameterInternational Sign LanguageSLSL Dictionary
PriceFreeFree
Rating5.0 (2 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings22
Update frequencyEvery 20 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.4 — better16.0
Further details — not scored
Size199 MB52 MB
Age rating4+4+
DeveloperRecep KocurDaniel Porteous

Customer experience

International Sign Language

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

SLSL Dictionary

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

In-app purchases

4 purchases

International Sign Language

Subscriptions3
  • 3 months$5.993 Months
  • 6 months$9.996 Months
  • 12 months$9.991 Year
One-time1
  • International Sign Language$10.99
None

SLSL Dictionary

No in-app purchases

Questions

Is International Sign Language free?
International Sign Language is free to download, with in-app purchases available.
Is SLSL Dictionary free?
SLSL Dictionary is free to download, with no in-app purchases.
Which has better reviews, International Sign Language or SLSL Dictionary?
International Sign Language and SLSL Dictionary are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do International Sign Language or SLSL Dictionary have ads?
Neither International Sign Language nor SLSL Dictionary shows ads.
Which is updated more often, International Sign Language or SLSL Dictionary?
International Sign Language ships an update every 20 months, and SLSL Dictionary every 5 days. Most recently, International Sign Language was updated on October 24, 2026 and SLSL Dictionary on November 3, 2026.

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