# Speech Vitals vs Parabon CTX Study App

The clearest difference is update cadence: Parabon CTX Study App at every 3 weeks against Speech Vitals's every 2 months. Parabon CTX Study App also leads on iOS requirement (13.0 vs 16.6). 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.

Speech Vitals ships an update every 2 months, Parabon CTX Study App every 3 weeks. The most recent releases landed on October 18, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Speech Vitals | Parabon CTX Study App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/speech-vitals/id1501374404/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 13 MB | 10 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Linus Health, Inc.](https://appshunter.io/developer/1481489335) | [Parabon NanoLabs, Inc.](https://appshunter.io/developer/1401016241) |

## What reviewers say

### Speech Vitals

[App page](https://appshunter.io/ios/app/speech-vitals/id1501374404)

This app collects and analyzes speech data for clinical research studies. It requires specific sign-in information provided by study sponsors for approved participants.

**Highlights:** Speech data collection, Speech data analysis, Clinical study participation, Secure participant login

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

**In-app purchases:** none


### Parabon CTX Study App

[App page](https://appshunter.io/ios/app/parabon-ctx-study-app/id6444806840)

**In-app purchases:** none


## Frequently asked questions

### Is Speech Vitals free?

Speech Vitals is free to download, with no in-app purchases.

### Is Parabon CTX Study App free?

Parabon CTX Study App is free to download, with no in-app purchases.

### Do Speech Vitals or Parabon CTX Study App have ads?

Neither Speech Vitals nor Parabon CTX Study App shows ads.

### Which is updated more often, Speech Vitals or Parabon CTX Study App?

Speech Vitals ships an update every 2 months, and Parabon CTX Study App every 3 weeks. Most recently, Speech Vitals was updated on October 18, 2026 and Parabon CTX Study App on October 6, 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.*