# Inference Ace vs Speech Therapy 4

The clearest difference is review sentiment: Inference Ace at 89% against Speech Therapy 4's 0%. Inference Ace also leads on rating (3.6 vs 3.4). Speech Therapy 4's advantage is update cadence (every 2 months vs every 7 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Inference Ace sells 3 one-off in-app purchases and Speech Therapy 4 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Inference Ace holds the better App Store score, 3.6 against 3.4. Both are backed by a comparable volume of ratings — 21 and 8 respectively. Written reviews point the same way: 89% of Inference Ace's written reviews are positive against 0% of Speech Therapy 4's.

Inference Ace ships an update every 7 months, Speech Therapy 4 every 2 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Inference Ace | Speech Therapy 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (21 ratings)](https://appshunter.io/ios/app/inference-ace/id866920724/reviews)** | [3.4 (8 ratings)](https://appshunter.io/ios/app/speech-therapy-4-articulation/id6444134003/reviews) |
| Number of ratings | **21** | 8 |
| Positive reviews | **88.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 22 MB | 170 MB |
| Requires iOS | 12.2 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Janine Toole](https://appshunter.io/developer/839832427) | [ImagiRation LLC](https://appshunter.io/developer/921324034) |

## What reviewers say

### Inference Ace

[App page](https://appshunter.io/ios/app/inference-ace/id866920724)

This app helps children in grades 2-5 improve their reading comprehension by teaching inference skills step-by-step. It uses a game-like environment with over 450 examples and a reward center to keep kids engaged. Detailed reporting is available for up to 10 students.

**Highlights:** Step-by-step inference skill building, Game-like environment with reward center, Over 450 examples designed by teachers, Detailed reporting for multiple students, Incremental learning with unlocked levels, Guided learning for reduced frustration

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to 2 Players | $1.99 | one-time |
| Inference Ace: Buy All Levels | $2.99 | one-time |
| Upgrade to 10 Players | $2.99 | one-time |


### 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 Inference Ace free?

Inference Ace is free to download, with in-app purchases available.

### Is Speech Therapy 4 free?

Speech Therapy 4 is free to download, with in-app purchases available.

### Which has better reviews, Inference Ace or Speech Therapy 4?

Inference Ace is rated higher. Inference Ace averages 3.6 out of 5 from 21 ratings, while Speech Therapy 4 averages 3.4 from 8 ratings.

### Do Inference Ace or Speech Therapy 4 have ads?

Neither Inference Ace nor Speech Therapy 4 shows ads.

### Which is updated more often, Inference Ace or Speech Therapy 4?

Inference Ace ships an update every 7 months, and Speech Therapy 4 every 2 months. Most recently, Inference Ace was updated on October 20, 2026 and Speech Therapy 4 on October 24, 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.*