Comparison

Spatial Stacker vs Speech Therapy 4

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

Head to head
About

Spatial Stacker

This educational app helps young children build crucial spatial reasoning skills. Players locate and stack various shapes to recreate target images, with increasing complexity across three difficulty levels.

Highlights
  • Shape identification
  • Shape stacking
  • Image matching
  • Three difficulty levels
  • Spatial awareness development
Features
Read full description

Spatial Stacker helps young children develop spatial awareness by locating unique shapes and stacking them up to match the given image. Three levels of difficulty are available, increasing the amount of stacked shapes to assemble.

About

Speech Therapy 4

This app helps children practice saying complex words through interactive video exercises and AI-powered feedback. It uses scientifically proven video modeling to engage mirror neurons and rewards improvements with extended playtime.

Highlights
  • AI-powered pronunciation analysis
  • 1000+ prerecorded video exercises
  • Reward system for improved articulation
  • Voice-activated interactive learning
  • Scientifically proven video modeling
  • Progressive learning steps
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 4 is for children who already learned many words and want to exercise on their articulation. HOW IT WORKS? Speech Therapy Step 4 uses 1000+ prerecorded video exercises. These videos encourage children to mirror words’ 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 4 - 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 4 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 4 is developed by Dr. A. Vyshedskiy, a neuroscientist from Boston University; R. Dunn, a Harvard-educated early-child-development specialist; MIT-educated, J. Elgart and a group of award-winning artists and developers working alongside experienced therapists.

Screenshots

Spatial Stacker3 screens
Speech Therapy 44 screens

Verdict

The call

The clearest difference is price: Speech Therapy 4 at Free against Spatial Stacker's $0.29. Speech Therapy 4 also leads on ratings volume (7 vs 1) and iOS requirement (12.0 vs 14.0). Spatial Stacker's advantage is rating (5.0 vs 3.1) and in-app purchases (none vs 1). On update cadence, 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

Speech Therapy 4 is free to download; Spatial Stacker costs $0.29 up front. Speech Therapy 4 sells 1 one-off in-app purchase. Spatial Stacker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spatial Stacker holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Speech Therapy 4 has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Spatial Stacker ships an update every 3 months, Speech Therapy 4 every 2 months. The most recent releases landed on September 23, 2026 and September 2, 2026 respectively.

Scorecard6 real differences · 4 level
Spatial Stacker versus Speech Therapy 4: the parameters behind the verdict, then further details
ParameterSpatial StackerSpeech Therapy 4
Price$0.29Free — better
Rating5.0 (1 ratings) — better3.1 (7 ratings)
Positive reviews—0.0% of reviews
Number of ratings17 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.012.0 — better
Further details — not scored
Size1 MB170 MB
Age rating4+4+
DeveloperSean McNeilImagiRation LLC

Customer experience

Spatial Stacker

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Speech Therapy 4

All ratings7 ratings
Positive42.9%
Neutral14.3%
Negative42.9%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Spatial Stacker

No in-app purchases

1 purchases

Speech Therapy 4

One-time1
  • Speech Therapy Step 4 Lifetime$29.99

Questions

Is Spatial Stacker free?
Spatial Stacker costs $0.29, with no in-app purchases.
Is Speech Therapy 4 free?
Speech Therapy 4 is free to download, with in-app purchases available.
Which has better reviews, Spatial Stacker or Speech Therapy 4?
Spatial Stacker is rated higher. Spatial Stacker averages 5.0 out of 5 from 1 ratings, while Speech Therapy 4 averages 3.1 from 7 ratings.
Do Spatial Stacker or Speech Therapy 4 have ads?
Neither Spatial Stacker nor Speech Therapy 4 shows ads.
Which is updated more often, Spatial Stacker or Speech Therapy 4?
Spatial Stacker ships an update every 3 months, and Speech Therapy 4 every 2 months. Most recently, Spatial Stacker was updated on September 23, 2026 and Speech Therapy 4 on September 2, 2026.

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