International Sign Language vs SLSL Dictionary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Global communication with hearing impaired
- Learn visual language
- Improve social inclusion
- Develop self-confidence
- Bridge communication barriers
- Suitable for all ages
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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.
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.
- Video demonstrations for signs
- Custom word list saving
- Flashcard revision feature
- Spaced repetition learning
- Support for English, Sinhala, and Tamil
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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 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
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.
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.
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.
| Parameter | International Sign Language | SLSL Dictionary |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (2 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 20 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.4 — better | 16.0 |
| Further details — not scored | ||
| Size | 199 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Recep Kocur | Daniel Porteous |
Customer experience
International Sign Language
SLSL Dictionary
In-app purchases
International Sign Language
- 3 months$5.993 Months
- 6 months$9.996 Months
- 12 months$9.991 Year
- International Sign Language$10.99
SLSL Dictionary
No in-app purchases
Questions
Is International Sign Language free?
Is SLSL Dictionary free?
Which has better reviews, International Sign Language or SLSL Dictionary?
Do International Sign Language or SLSL Dictionary have ads?
Which is updated more often, International Sign Language or SLSL Dictionary?
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