SignSchool vs SLSL Dictionary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SignSchool
Learn American Sign Language at your own pace with this app. It offers a dictionary of thousands of signs, categorized lessons, and a slow-motion feature for detailed viewing. Practice your skills with a daily sign and a fingerspelling game.
- ASL dictionary with thousands of signs
- Categorized sign lessons
- Slow-motion sign playback
- Fingerspelling game
- Sign of the Day
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Learn American Sign Language for free. Wherever. Whenever. Whether you’re on the go or relaxing at home, SignSchool’s app lets you learn American Sign Language at your own pace. In this app, you can: - Browse the dictionary: Learn thousands of signs from a diverse group of signers and various dialects - Choose a category: Explore hundreds of sign categories covering a variety of topics - Learn at your own pace: Watch signs in more detail with the slow motion feature - Play with the Fingerspelling Game: Strengthen your fingerspelling skills - Improve your ASL with Sign of the Day: Learn a new sign everyday and review weekly For a more comprehensive learning experience with interactive lessons and learning tools, check out our website— www.signschool.com.
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 SignSchool's 4.5. SLSL Dictionary also leads on review sentiment (100% vs 64%) and update cadence (every 5 days vs every 2 weeks). SignSchool's advantage is ratings volume (148 vs 2) and iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and monetization model 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 4.5. That said, the two scores are not equally well evidenced: SignSchool has 148 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 64% of SignSchool's written reviews are positive against 100% of SLSL Dictionary's.
SignSchool ships an update every 2 weeks, SLSL Dictionary every 5 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | SignSchool | SLSL Dictionary |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (148 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 63.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 148 — better | 2 |
| Update frequency | Every 2 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 47 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | SignSchool Technologies LLC | Daniel Porteous |
Customer experience
SignSchool
SLSL Dictionary
Bugs and requests
SignSchool
Reported bugs
3 issues- Topics page not loading
- Repeated or incorrect signs in dictionary
- App crashing or freezing
Requested features
5 requests- Add ability to save/favorite words
- Implement quizzes and review features
- Provide more descriptions and explanations for signs
- Include LGBTQ+ and disability-related vocabulary
- Allow offline access to videos
SLSL Dictionary
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SignSchool
No in-app purchases
SLSL Dictionary
No in-app purchases
Questions
Is SignSchool free?
Is SLSL Dictionary free?
Which has better reviews, SignSchool or SLSL Dictionary?
Do SignSchool or SLSL Dictionary have ads?
Which is updated more often, SignSchool or SLSL Dictionary?
Other comparisons
