# Clusters Complex Lite vs AAT Plus

The clearest difference is in-app purchases: Clusters Complex Lite at none against AAT Plus's 3. Clusters Complex Lite also leads on update cadence (fortnightly vs monthly) and device support (3 vs 1). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. AAT Plus sells 3 in-app purchases, starting at $5.99 per month. Clusters Complex Lite asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Clusters Complex Lite against 5.0 for AAT Plus. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Clusters Complex Lite ships an update fortnightly, AAT Plus monthly. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Clusters Complex Lite | AAT Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/clusters-complex-lite/id880776034/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/aat-plus/id1527491925/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 267 MB | 112 MB |
| Requires iOS | **10.3** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [SLPath LLC](https://appshunter.io/developer/880431285) | [Smarty Ears](https://appshunter.io/developer/348779167) |

## 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


### AAT Plus

[App page](https://appshunter.io/ios/app/aat-plus/id1527491925)

This tool offers a comprehensive suite of screeners and assessments for articulation, including quick screeners, full assessments, sentence-level tests, and stimulability tests. It is designed to aid in evaluating speech sound production.

**Highlights:** Quick screener, Full assessment, Sentence level assessment, R Screener, Stimulability tests

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Unlimited Testing | $5.99 | per month |
| Yearly Unlimited Tests | $37.99 | per year |
| Purchase 5 tests | $5.99 | one-time |


## Frequently asked questions

### Is Clusters Complex Lite free?

Clusters Complex Lite is free to download, with no in-app purchases.

### Is AAT Plus free?

AAT Plus is free to download, with in-app purchases available.

### Which has better reviews, Clusters Complex Lite or AAT Plus?

Clusters Complex Lite and AAT Plus are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Clusters Complex Lite or AAT Plus have ads?

Neither Clusters Complex Lite nor AAT Plus shows ads.

### Which is updated more often, Clusters Complex Lite or AAT Plus?

Clusters Complex Lite ships an update fortnightly, and AAT Plus monthly. Most recently, Clusters Complex Lite was updated on October 3, 2026 and AAT Plus on October 7, 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.*