Comparison

Comprehension Aphasia 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

Comprehension Aphasia

This app helps improve auditory processing and receptive language skills for adults and children. It offers over 1,700 audio instructions across various activities, including yes-no questions and directions, with adjustable difficulty levels and optional background noise to enhance focus.

Highlights
  • Auditory processing improvement
  • Receptive language development
  • 1,700+ audio instructions
  • Adjustable difficulty levels
  • Background noise simulation
  • User progress tracking
  • Multi-user support
Features
Read full description

****I like that this app includes so many different activity choices and different levels. One thing that this app includes that most do not is background noise. This is great for working on a student's ability to focus on a task and ignore distractions. (Simply Speech)**** ****Comprehension Aphasia is a great app for anyone working on improving their auditory processing/receptive language abilities. It's a comprehensive app that allows you to work on so much, while increasing cognitive and linguistic complexity. (Carrie's Speech Corner)**** The Comprehension Aphasia app was created by a certified speech and language pathologist for adults and children, and it focuses on auditory comprehension of increasingly longer and complex yes-no- questions and directions with the ability to turn on background noise. The Comprehension Aphasia app can be used by individuals who exhibit: -Aphasia, secondary to brain injury such as stroke -Cognitive deficits such as decreased attention - Central Auditory Processing Disorder (CAPD) -Receptive language disorders and Autism Comprehension Aphasia includes more than 1,700 pre-recorded audio instructions in the following activities: -Yes-no questions with six levels of difficulty -Basic Directions with one element with 12 levels of difficulty - Basic Directions with two elements with 12 levels of difficulty - Temporal Directions with 18 levels of difficulty - Conditional Directions with nine levels of difficulty The Comprehension Aphasia app is easy to navigate and allows users to use several tools to perform the following tasks: -Enter multiple users -Change settings -Select auto-scoring -Select alternate counts for multiple users -Enable or disable feedback sounds -Choose different feedback sounds -Enable background noise -Choose different types of noise -Track correct and incorrect responses -E-mail results at the end of the game

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 price: Keywords Understanding Lite at Free against Comprehension Aphasia's $19.99. Keywords Understanding Lite also leads on rating (5.0 vs 2.0) and device support (3 vs 1). Comprehension Aphasia's advantage is update cadence (every 10 months vs every 68 months). On ads, in-app purchases and iOS requirement 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

Keywords Understanding Lite is free to download; Comprehension Aphasia costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Keywords Understanding Lite holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

UpkeepUpdate frequency

Comprehension Aphasia ships an update every 10 months, Keywords Understanding Lite every 68 months. The most recent releases landed on June 6, 2026 and August 12, 2026 respectively.

Scorecard6 real differences · 4 level
Comprehension Aphasia versus Keywords Understanding Lite: the parameters behind the verdict, then further details
ParameterComprehension AphasiaKeywords Understanding Lite
Price$19.99Free — better
Rating2.0 (1 ratings)5.0 (3 ratings) — better
Positive reviews33.3% of reviews—
Number of ratings13 — better
Update frequencyEvery 10 months — betterEvery 68 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS15.615.0 — better
Further details — not scored
Size217 MB60 MB
Age rating4+4+
DeveloperVirtual Speech Center Inc.Aptus Speech and Language Therapy Limited

Customer experience

Comprehension Aphasia

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

Keywords Understanding Lite

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

In-app purchases

None

Comprehension Aphasia

No in-app purchases

None

Keywords Understanding Lite

No in-app purchases

Questions

Is Comprehension Aphasia free?
Comprehension Aphasia costs $19.99, 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, Comprehension Aphasia or Keywords Understanding Lite?
Keywords Understanding Lite is rated higher. Comprehension Aphasia averages 2.0 out of 5 from 1 ratings, while Keywords Understanding Lite averages 5.0 from 3 ratings.
Do Comprehension Aphasia or Keywords Understanding Lite have ads?
Neither Comprehension Aphasia nor Keywords Understanding Lite shows ads.
Which is updated more often, Comprehension Aphasia or Keywords Understanding Lite?
Comprehension Aphasia ships an update every 10 months, and Keywords Understanding Lite every 68 months. Most recently, Comprehension Aphasia was updated on June 6, 2026 and Keywords Understanding Lite on August 12, 2026.

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