# Open vs AAT Plus

The clearest difference is price: AAT Plus at Free against Open's $4.99. AAT Plus also leads on update cadence (monthly vs every 10 months). Open's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On rating, review sentiment, ratings volume and ads there is nothing between them.

AAT Plus is free to download; Open costs $4.99 up front. AAT Plus sells 3 in-app purchases, starting at $5.99 per month. Open asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Open against 5.0 for AAT Plus. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Open ships an update every 10 months, AAT Plus monthly. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Open | AAT Plus |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/open-ended-articulation/id704631125/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/aat-plus/id1527491925/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 295 MB | 112 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Erik X. Raj](https://appshunter.io/developer/529529123) | [Smarty Ears](https://appshunter.io/developer/348779167) |

## What reviewers say

### Open

[App page](https://appshunter.io/ios/app/open-ended-articulation/id704631125)

This app provides over 500 open-ended questions with audio components to help individuals practice specific speech sounds. It's designed for speech-language pathologists and educators to facilitate articulation practice and encourage creative thinking in a fun, interactive way.

**Highlights:** Over 500 open-ended questions, Sound-specific practice (S, Z, R, L, etc.), Audio narrative for each question, Example audio responses, Child-friendly interface, No in-app purchases or external links

**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 Open free?

Open costs $4.99, with no in-app purchases.

### Is AAT Plus free?

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

### Which has better reviews, Open or AAT Plus?

Open and AAT Plus are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do Open or AAT Plus have ads?

Neither Open nor AAT Plus shows ads.

### Which is updated more often, Open or AAT Plus?

Open ships an update every 10 months, and AAT Plus monthly. Most recently, Open 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.*