Comparison

Baby Sign Dictionary 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

Baby Sign Dictionary

Teach your baby to communicate before they can speak using American Sign Language. This app offers video demonstrations, categorized signs, and interactive quizzes to make learning fun and easy for both parent and child.

Highlights
  • 40 real-life signing video demonstrations
  • Signs organized by categories
  • Interactive video quiz
  • Favorites list for signs
  • Detailed video tutorials
  • Swipe through signs
Features
Read full description

Take the guess work out of parenting and discover the joy of knowing what your baby has to say before she can talk! One of the most fundamental human desires is to be understood - help your baby communicate by teaching her baby sign language. This app is free to allow you an opportunity to sample the many features and to try a few signs with your child. Then, if you would like to continue, please consider buying the full version which contains approx. 340 signs and over 1 hour of video instruction. The full version is available for purchase on the App Store. This app includes 40 real-life signing video demonstrations! The friendly presenters in the 'ASL dictionary by Baby Sign and Learn' app will help you to learn to sign with your baby in an engaging and enjoyable way. The keyword signs demonstrated in this video dictionary are based on American Sign Language (ASL). All signs have been carefully selected for their ease of use, helpfulness to carers and appropriateness for baby's interests and daily routine. Each sign has a detailed video tutorial covering information such as: simple instructions on how to perform the sign, clever tips to help you remember the sign and practical suggestions on how to introduce the sign to your baby. The signs are also organized into categories such as: action words, animals, daily routines, feelings and emotions, food, manners and behavior, and nature – all of which are arranged alphabetically for quick and easy searching. To test your baby signing knowledge, the app also comes with a fun interactive video quiz that will help you learn and remember the signs. You can also mark signs as part of your favorites list. Other key features: • high quality graphics and videos optimized for viewing on Retina displays. • optional setting to allow continuous play through of all signs in a category. • swipe through the signs in a category without returning to the menu. • optional setting to view a simplified demonstration for a sign rather than the complete tutorial. This app makes the perfect parent's companion to the popular 'Baby Sign and Learn' animated apps (also available on the App Store). Featuring gentle guidance and practical advice, this app has been designed to help make teaching your baby to sign as easy as waving “bye-bye”!

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

Enter a search term, select a word, and the app will show you a definition and a video of someone performing the sign. In addition to this basic functionality, the app features support for saving custom lists of words for quick access as well as a flashcard based revision feature with random and spaced repetition learning strategies. The app has support for learning in English, Sinhala, and Tamil.

Screenshots

Baby Sign Dictionary4 screens
SLSL Dictionary4 screens

Verdict

The call

The clearest difference is rating: SLSL Dictionary at 5.0 against Baby Sign Dictionary's 4.4. SLSL Dictionary also leads on update cadence (every 2 weeks vs every 15 months) and monetization model (free vs freemium). Baby Sign Dictionary's advantage is ratings volume (239 vs 2) and iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SLSL Dictionary holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Baby Sign Dictionary has 239 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 81% of Baby Sign Dictionary's written reviews are positive against 100% of SLSL Dictionary's.

UpkeepUpdate frequency

Baby Sign Dictionary ships an update every 15 months, SLSL Dictionary every 2 weeks. The most recent releases landed on September 24, 2026 and September 11, 2026 respectively.

Scorecard6 real differences · 4 level
Baby Sign Dictionary versus SLSL Dictionary: the parameters behind the verdict, then further details
ParameterBaby Sign DictionarySLSL Dictionary
PriceFreeFree
Rating4.4 (239 ratings)5.0 (2 ratings) — better
Positive reviews81.0% of reviews100.0% of reviews — better
Number of ratings239 — better2
Update frequencyEvery 15 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size82 MB52 MB
Age rating4+4+
DeveloperBaby Sign and LearnDaniel Porteous

Customer experience

Baby Sign Dictionary

All ratings239 ratings
Positive82.8%
Neutral6.3%
Negative10.9%
Written reviews58 reviews
Positive81.0%
Neutral3.4%
Negative15.5%

SLSL Dictionary

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

Bugs and requests

Baby Sign Dictionary

Reported bugs

2 issues
  • Text not showing up in favorites list
  • Words not showing up in the dictionary

Requested features

6 requests
  • Include written words in the dictionary
  • Add captions to spoken explanations
  • Expand the vocabulary in the free version
  • Include more common words
  • Offer computerized, cartoon-type babies instead of adults
Show 1 more
  • Make videos more child-friendly and less long-winded

SLSL Dictionary

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Baby Sign Dictionary

No in-app purchases

None

SLSL Dictionary

No in-app purchases

Questions

Is Baby Sign Dictionary free?
Baby Sign Dictionary is free to download, with no in-app purchases.
Is SLSL Dictionary free?
SLSL Dictionary is free to download, with no in-app purchases.
Which has better reviews, Baby Sign Dictionary or SLSL Dictionary?
SLSL Dictionary is rated higher. Baby Sign Dictionary averages 4.4 out of 5 from 239 ratings, while SLSL Dictionary averages 5.0 from 2 ratings.
Do Baby Sign Dictionary or SLSL Dictionary have ads?
Neither Baby Sign Dictionary nor SLSL Dictionary shows ads.
Which is updated more often, Baby Sign Dictionary or SLSL Dictionary?
Baby Sign Dictionary ships an update every 15 months, and SLSL Dictionary every 2 weeks. Most recently, Baby Sign Dictionary was updated on September 24, 2026 and SLSL Dictionary on September 11, 2026.

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