Comparison

Clusters Complex Lite vs Speech Therapy 6

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

Head to head
About

Clusters Complex Lite

This app helps children practice complex consonant clusters in words, phrases, and sentences. It uses colorful photos, videos, and motivating themes to engage young learners. Speech-language pathologists can monitor progress with data collection and audio recordings.

Highlights
  • Complex consonant cluster practice
  • Words, phrases, and sentences
  • Colorful photos and videos
  • Motivating themes
  • Randomization option
  • Progress monitoring
  • Audio recording and data collection
Features
Read full description

*** This is the FREE version of Clusters Complex Pro. This version includes /shr-/ and five themes. *** The full version, Clusters Complex Pro features: • CC and sCC clusters (/θr-/, /fl-/, /fr-/, /sl-/, /shr-/, /str-/, /skr-/, /spr-/, /skw-/, /spl-/) • English targets – Words (88) – Phrases (440) – Sentences (440) • Colorful photos and videos • Over 30 themes (sports, animals, activities) for students to choose from; each comes with its own customized buttons, backgrounds, and reward videos • Randomization option • Self-monitoring • Progress monitoring • Customized messages for students • Data collection features include audio recordings which can be emailed, backed up to computer, or stored on your Apple device Welcome to the Clusters Complex! Our app targets the ten most complex clusters, including three-element clusters and complex two-element clusters. It includes 968 photographs depicting 88 words, 440 phrases and 440 sentences. Children may select motivating themes based on specific animals, activities and sports. A randomization option presents the photographs in mixed order. Furthermore, children can engage in self-monitoring and view short reward videos if they achieve a high level of accuracy. SLPs have the option to monitor progress through recordings and data collection over time, all of which can be backed up on a computer or emailed. All words in this app were carefully selected for the above complex clusters. Ideally, the targets also include early-developing sounds in the medial or final word position. For instance, among /skw-/ words are “squad,” “squeaky” and “squeeze.” We did not select “square” or “squabble” because the final sounds may distract from the challenging initial clusters. Additionally, the phrases and sentences were judiciously chosen. As much as possible, they are loaded with early-developing sounds so that the child may focus on the cluster target. For example, the /fl-/ phrase “white floppy hat” allows the child to focus on the /fl-/ target because it is surrounded by the early sounds, /w t p h/. Likewise, the /fl-/ sentence “We took a flight to Maine” provides a facilitative context.

About

Speech Therapy 6

This app helps children practice forming complete sentences using video models and AI-powered feedback. It rewards improvements in articulation, encouraging consistent practice for better speech development.

Highlights
  • 100+ prerecorded video exercises
  • AI-powered similarity measurement
  • Proportional rewards for improvement
  • Voice-activated interactive learning
  • Scientifically proven video modeling
Features
Read full description

The developer of the only clinically-validated language therapy application MITA that was downloaded by over 3 million families, brings you a series of Speech Therapy apps: Speech Therapy Step 1 – Preverbal exercises Speech Therapy Step 2 – Learn to sequence sounds Speech Therapy Step 3 – Learn to say 500+ words Speech Therapy Step 4 – Learn to say complex words Speech Therapy Step 5 – Record your own model words and exercise articulation Speech Therapy Step 6 – Learn to say complete sentences ___________________________ Speech Therapy Step 6 is for children who already learned many words and want to combine them into sentences. HOW IT WORKS? Speech Therapy Step 6 uses 100+ prerecorded video exercises. These videos encourage children to mirror sentences’ pronunciation. A proprietary AI algorithm measures similarity between model words and children’s vocalizations. Improvements are rewarded with reinforcers and PlayTime. This technique was demonstrated to improve speech production in toddlers, late talkers (speech delay), children with Apraxia of Speech, Stuttering, Autism, ADHD, Down Syndrome, Sensory Processing Disorder, Dysarthria. Video exercises are followed by a PlayTime. Improvements in performance are rewarded with reinforcers and a longer PlayTime. In order to achieve a longer PlayTime, children try to improve their articulation. In this way the app works autonomously all the time encouraging children to improve articulation. LEARN WITH SPEECH THERAPY STEP 6 - The only speech therapy app that rewards your child proportionally to the improvement of their articulation. - Uses scientifically proven video modeling for effective speech development. - Voice-activated functionality provides a fun, interactive learning experience. - The app basic version is completely FREE! - No ads. SCIENTIFICALLY-PROVEN LEARNING TECHNIQUES Speech Therapy Step 6 uses video modeling to create an immersive learning environment. When children watch model videos in real time, their MIRROR NEURONS are engaged. This is scientifically proven to be highly effective in speech development. FROM THE DEVELOPERS OF THE CLINICALLY-VALIDATED LANGUAGE THERAPY APPLICATION MITA Speech Therapy Step Series is developed by Boston University neuroscientist Dr. A. Vyshedskiy, Speech and Language Therapist Y. Bolotovsky, Harvard-educated early-child-development specialist R. Dunn, MIT-educated J. Elgart, and a group of award-winning artists and developers.

Screenshots

Clusters Complex Lite3 screens
Speech Therapy 64 screens

Verdict

The call

The clearest difference is rating: Clusters Complex Lite at 5.0 against Speech Therapy 6's 4.0. Clusters Complex Lite also leads on in-app purchases (none vs 1) and update cadence (fortnightly vs every 6 weeks). On price, ratings volume, ads 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. Speech Therapy 6 sells 1 one-off in-app purchase. Clusters Complex Lite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Clusters Complex Lite holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

Clusters Complex Lite ships an update fortnightly, Speech Therapy 6 every 6 weeks. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

Scorecard5 real differences · 5 level
Clusters Complex Lite versus Speech Therapy 6: the parameters behind the verdict, then further details
ParameterClusters Complex LiteSpeech Therapy 6
PriceFreeFree
Rating5.0 (2 ratings) — better4.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings22
Update frequencyFortnightly — betterEvery 6 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.3 — better14.0
Further details — not scored
Size267 MB192 MB
Age rating4+4+
DeveloperSLPath LLCImagiRation LLC

Customer experience

Clusters Complex Lite

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Speech Therapy 6

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

In-app purchases

None

Clusters Complex Lite

No in-app purchases

1 purchases

Speech Therapy 6

One-time1
  • Speech Therapy 6 – Lifetime$19.99

Questions

Is Clusters Complex Lite free?
Clusters Complex Lite is free to download, with no in-app purchases.
Is Speech Therapy 6 free?
Speech Therapy 6 is free to download, with in-app purchases available.
Which has better reviews, Clusters Complex Lite or Speech Therapy 6?
Clusters Complex Lite is rated higher. Clusters Complex Lite averages 5.0 out of 5 from 2 ratings, while Speech Therapy 6 averages 4.0 from 2 ratings.
Do Clusters Complex Lite or Speech Therapy 6 have ads?
Neither Clusters Complex Lite nor Speech Therapy 6 shows ads.
Which is updated more often, Clusters Complex Lite or Speech Therapy 6?
Clusters Complex Lite ships an update fortnightly, and Speech Therapy 6 every 6 weeks. Most recently, Clusters Complex Lite was updated on October 3, 2026 and Speech Therapy 6 on October 15, 2026.

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