Comparison

Word SlapPs Lite vs Keywords Understanding Lite

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

Head to head
About

Word SlapPs Lite

This app allows parents, teachers, and speech-language pathologists to create personalized vocabulary lessons for children. Users can upload custom images and record their own questions, with adjustable difficulty levels and engaging rewards. It's designed to help young learners master new words and concepts.

Highlights
  • Upload custom images for lessons
  • Record your own audio questions
  • Adjustable difficulty levels
  • Personalized vocabulary categories
  • Visual and auditory rewards
  • Supports second language vocabulary
Features
Read full description

Word SlapPs Lite is a great sample of what can be done using our full version. Teach vocabulary words specific to your child with images that you choose. Upload and save up to eight images into a customizable category and pair them with your own recorded questions. Word SLapPs Lite is designed by an SLP and modeled after Discrete Trial teaching. Children touch target images and are rewarded with sounds and/or visuals. Target vocabulary words alone or with up to two other images to increase difficulty. Word SLapPs Lite comes pre-loaded with color and animal categories to start with. Word SlapPs Lite is recommended for SLP’s, teachers or parents. Key Features: Teach what you want: nouns, actions, sight words, "where" questions... Upload your own images to personalize teaching Pair images with your own voice recorded questions Three levels of play, in addition to randomization Settings allow control of auto-advance, sounds and visual effects Teach vocabulary from a second language Target one or more vocabulary Help young readers master sight words

About

Keywords Understanding Lite

This app offers a sample of speech and language therapy exercises focused on sentence comprehension. It helps users practice following directions, understanding basic concepts, and improving auditory and reading comprehension skills through interactive activities.

Highlights
  • Listening comprehension exercises
  • Reading comprehension exercises
  • Following directions (one/two-step, temporal, sequential)
  • Basic concepts (size, color)
  • Vocabulary understanding
  • Sample of full app features
Features
Read full description

Keywords Understanding LITE is a free version of Keyword Understanding. It gives you a sample of the content you would get in the full version. It allows you to see how the full version works and try it out for free. Keyword Understanding (the full app version) is a professional speech and language therapy app that works on sentence-level reading and listening comprehension. It also targets the understanding of vocabulary, basic concepts and the ability to follow directions of increasing keyword length. WHO IS KEYWORD UNDERSTANDING FOR? - Children with reduced attention and auditory processing difficulties - Children with language delay or disorder - Children with autism and language comprehension difficulties - Adults with aphasia and reading or spoken language comprehension difficulties after a stroke or traumatic brain injury - Adults with cognitive-communication difficulties due to stroke or brain injury WHAT LANGUAGE AREAS DOES KEYWORD UNDERSTANDING TARGET? FOLLOWING DIRECTIONS: Following directions is important in our everyday lives. In order to understand and follow directions, one needs a strong knowledge of basic concepts, vocabulary and the ability to process and retain spoken or written information in memory. BASIC CONCEPTS, ONE AND TWO STEP DIRECTIONS: Keyword Understanding works on the basic concepts of size and color as well as one and two-step directions of increasing length and difficulty e.g  - “Touch the red balloon” - “Touch the small green umbrella” - “Touch the yellow chair and the blue candle” - “Touch the big pink cupcake and the small green glasses”. TEMPORAL DIRECTIONS (BEFORE/AFTER): Keyword Understanding includes Temporal Directions tasks that target the child or adult’s ability to follow directions that include the concepts 'Before/After' in a variety of positions in the sentence. e.g  - “Before you touch the t-shirt, touch the phone” - “After you touch the lamp, touch the vase” - “Touch the flower before you touch the box” - “Touch the sock after you touch the bucket” SEQUENTIAL DIRECTIONS (FIRST…THEN): The app also includes Sequential Directions that target the child or adult’s ability to follow directions that include the concepts 'First ... Then' in the sentence. e.g  - “First touch the ladder, then touch the bike”. FEATURES OF KEYWORDS UNDERSTANDING LITE This FREE version, Keywords Understanding LITE allows you to sample each activity in the full version but it only includes 6 objects. The FULL version includes many more allowing for much more variety in each activity and many more trials. The full version also allows you to select and deselect vocabulary items in the Word List. 3 modes: - Listening Comprehension (Audio Only): Match the spoken direction to the pictures - Reading Comprehension (Text Only): Match the written direction to the pictures - Listening and Reading Comprehension (Audio and Text): Match the spoken and written directions to the pictures - Bright, colorful, real-life photos of common objects - 6 objects in five different colors and sizes. The full version has a large variety allowing for thousands of possible following directions tasks - 3 trials in each activity. The full version allows for up to 50 trials per session. - A comprehension check activity to find out where comprehension breakdown occurs - Audio feedback for correct answers only, incorrect answers only or both - Graded tasks of increasing difficulty - User profiles and result history - Automatic tracking of scores - Optional results summary via email - iOS voices (automatically selected based on your region). Download an enhanced iOS voice for best quality. All Aptus Speech Therapy apps participate in the 50% off Volume Purchase Program, so you can buy in bulk at a discounted price. Are you looking for a different kind of speech therapy app? Check out our full range of speech and language therapy apps for adults and children on the AppStore or on our website.

Screenshots

Keywords Understanding Lite4 screens

Verdict

The call

The clearest difference is update cadence: Word SlapPs Lite at every 18 months against Keywords Understanding Lite's every 68 months. Word SlapPs Lite also leads on iOS requirement (10.0 vs 15.0). Keywords Understanding Lite's advantage is device support (3 vs 1). 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Word SlapPs Lite against 5.0 for Keywords Understanding Lite. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

UpkeepUpdate frequency

Word SlapPs Lite ships an update every 18 months, Keywords Understanding Lite every 68 months. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 6 level
Word SlapPs Lite versus Keywords Understanding Lite: the parameters behind the verdict, then further details
ParameterWord SlapPs LiteKeywords Understanding Lite
PriceFreeFree
Rating5.0 (2 ratings)5.0 (3 ratings)
Number of ratings23 — better
Update frequencyEvery 18 months — betterEvery 68 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad, iPod — better
Requires iOS10.0 — better15.0
Further details — not scored
Size65 MB60 MB
Age rating4+4+
DeveloperZorten Software, LLCAptus Speech and Language Therapy Limited

Customer experience

Word SlapPs Lite

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

Keywords Understanding Lite

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Word SlapPs Lite

No in-app purchases

None

Keywords Understanding Lite

No in-app purchases

Questions

Is Word SlapPs Lite free?
Word SlapPs Lite is free to download, with no in-app purchases.
Is Keywords Understanding Lite free?
Keywords Understanding Lite is free to download, with no in-app purchases.
Which has better reviews, Word SlapPs Lite or Keywords Understanding Lite?
Word SlapPs Lite and Keywords Understanding Lite are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.
Do Word SlapPs Lite or Keywords Understanding Lite have ads?
Neither Word SlapPs Lite nor Keywords Understanding Lite shows ads.
Which is updated more often, Word SlapPs Lite or Keywords Understanding Lite?
Word SlapPs Lite ships an update every 18 months, and Keywords Understanding Lite every 68 months. Most recently, Word SlapPs Lite was updated on October 11, 2026 and Keywords Understanding Lite on October 8, 2026.

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