# Prosody Assessment vs TD Talk

The clearest difference is update cadence: Prosody Assessment at every 2 weeks against TD Talk's every 2 months. Prosody Assessment also leads on iOS requirement (14.5 vs 17.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Prosody Assessment ships an update every 2 weeks, TD Talk every 2 months. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Prosody Assessment | TD Talk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (11 ratings)](https://appshunter.io/ios/app/td-talk/id1509210085/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | — | Free |
| Size | 32 MB | 305 MB |
| Requires iOS | **14.5** | 17.2 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [BioSpeech, Inc.](https://appshunter.io/developer/923094369) | [Tobii Dynavox LLC](https://appshunter.io/developer/446210474) |

## What reviewers say

### Prosody Assessment

[App page](https://appshunter.io/ios/app/prosody-assessment-client/id1352111154)

**In-app purchases:** none


### TD Talk

[App page](https://appshunter.io/ios/app/td-talk/id1509210085)

This app enables communication for individuals unable to use their voice or hands. It offers text-to-speech functionality through eye-tracking or touch input, supporting a wide range of languages and voices for natural conversation.

**Highlights:** Eye-tracking communication, Touch input for typing, Customized predictive sentence construction, In-sentence editing, 35+ languages and voices, Face-to-face conversation mode, QuickMessages for common phrases

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Prosody Assessment free?

Prosody Assessment is free to download, with no in-app purchases.

### Is TD Talk free?

TD Talk is free to download, with no in-app purchases.

### Do Prosody Assessment or TD Talk have ads?

Neither Prosody Assessment nor TD Talk shows ads.

### Which is updated more often, Prosody Assessment or TD Talk?

Prosody Assessment ships an update every 2 weeks, and TD Talk every 2 months. Most recently, Prosody Assessment was updated on October 16, 2026 and TD Talk 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.*