# RealTimeVitalSigns vs Parabon CTX Study App

The clearest difference is update cadence: Parabon CTX Study App at every 3 weeks against RealTimeVitalSigns's every 4 months. 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.

RealTimeVitalSigns ships an update every 4 months, Parabon CTX Study App every 3 weeks. The most recent releases landed on September 8, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | RealTimeVitalSigns | Parabon CTX Study App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (5 ratings)](https://appshunter.io/ios/app/realtimevitalsigns/id1626720336/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 10 MB | 10 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [3 Net Wise, Inc.](https://appshunter.io/developer/1622808618) | [Parabon NanoLabs, Inc.](https://appshunter.io/developer/1401016241) |

## What reviewers say

### RealTimeVitalSigns

[App page](https://appshunter.io/ios/app/realtimevitalsigns/id1626720336)

This app collects vital signs data from Bluetooth-enabled medical devices like blood pressure monitors and pulse oximeters. The collected information is then uploaded to a web platform for review. It is intended for data collection only and does not provide medical diagnoses or treatment advice.

**Highlights:** Collects data from Bluetooth medical devices, Supports blood pressure monitors, Supports pulse oximeters, Supports weight scales, Supports thermometers, Supports blood glucose meters, Uploads data to realtimevitalsigns.com

**Features:** macOS Compatibility

**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 RealTimeVitalSigns free?

RealTimeVitalSigns 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 RealTimeVitalSigns or Parabon CTX Study App have ads?

Neither RealTimeVitalSigns nor Parabon CTX Study App shows ads.

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

RealTimeVitalSigns ships an update every 4 months, and Parabon CTX Study App every 3 weeks. Most recently, RealTimeVitalSigns was updated on September 8, 2026 and Parabon CTX Study App on September 19, 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.*