# Clusters Complex Lite vs Speech Therapy 4

The clearest difference is review sentiment: Clusters Complex Lite at 100% against Speech Therapy 4's 0%. Clusters Complex Lite also leads on rating (5.0 vs 3.4) and in-app purchases (none vs 1). Speech Therapy 4's advantage is ratings volume (8 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. Speech Therapy 4 sells 1 one-off in-app purchase. Clusters Complex Lite asks for nothing beyond the download.

Clusters Complex Lite holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews point the same way: 100% of Clusters Complex Lite's written reviews are positive against 0% of Speech Therapy 4's.

Clusters Complex Lite ships an update fortnightly, Speech Therapy 4 every 2 months. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Clusters Complex Lite | Speech Therapy 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/clusters-complex-lite/id880776034/reviews)** | [3.4 (8 ratings)](https://appshunter.io/ios/app/speech-therapy-4-articulation/id6444134003/reviews) |
| Number of ratings | 2 | **8** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 267 MB | 170 MB |
| Requires iOS | **10.3** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SLPath LLC](https://appshunter.io/developer/880431285) | [ImagiRation LLC](https://appshunter.io/developer/921324034) |

## What reviewers say

### Clusters Complex Lite

[App page](https://appshunter.io/ios/app/clusters-complex-lite/id880776034)

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:** macOS Compatibility

**In-app purchases:** none


### Speech Therapy 4

[App page](https://appshunter.io/ios/app/speech-therapy-4-articulation/id6444134003)

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:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Speech Therapy Step 4 Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Clusters Complex Lite free?

Clusters Complex Lite is free to download, 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, Clusters Complex Lite or Speech Therapy 4?

Clusters Complex Lite is rated higher. Clusters Complex Lite averages 5.0 out of 5 from 2 ratings, while Speech Therapy 4 averages 3.4 from 8 ratings.

### Do Clusters Complex Lite or Speech Therapy 4 have ads?

Neither Clusters Complex Lite nor Speech Therapy 4 shows ads.

### Which is updated more often, Clusters Complex Lite or Speech Therapy 4?

Clusters Complex Lite ships an update fortnightly, and Speech Therapy 4 every 2 months. Most recently, Clusters Complex Lite was updated on October 3, 2026 and Speech Therapy 4 on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*