# calcMod vs Speech Therapy 4

The clearest difference is price: Speech Therapy 4 at Free against calcMod's $0.99. Speech Therapy 4 also leads on iOS requirement (12.0 vs 15.0). calcMod's advantage is in-app purchases (none vs 1) and update cadence (every 6 days vs every 2 months). On ads and device support there is nothing between them.

Speech Therapy 4 is free to download; calcMod costs $0.99 up front. Speech Therapy 4 sells 1 one-off in-app purchase. calcMod asks for nothing beyond the download.

calcMod ships an update every 6 days, Speech Therapy 4 every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | calcMod | Speech Therapy 4 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.4 (8 ratings)](https://appshunter.io/ios/app/speech-therapy-4-articulation/id6444134003/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 170 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alain Cardinaux](https://appshunter.io/developer/1443066124) | [ImagiRation LLC](https://appshunter.io/developer/921324034) |

## What reviewers say

### calcMod

[App page](https://appshunter.io/ios/app/calcmod-prox/id1443066125)

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

**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 calcMod free?

calcMod costs $0.99, with no in-app purchases.

### Is Speech Therapy 4 free?

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

### Do calcMod or Speech Therapy 4 have ads?

Neither calcMod nor Speech Therapy 4 shows ads.

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

calcMod ships an update every 6 days, and Speech Therapy 4 every 2 months. Most recently, calcMod was updated on November 6, 2026 and Speech Therapy 4 on November 3, 2026.

---

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