# Spren Demo

> Smartphone camera-based heart rate variability (HRV) measurement technology demonstration. (iPhone/iPad app by Elite HRV Inc.)

- Source: https://appshunter.io/ios/app/spren-demo/id1612317879 (this page in markdown: same URL + `.md`)
- Developer: [Elite HRV Inc](https://appshunter.io/developer/868829973)
- Category: Health & Fitness
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 14.0 · 7 MB
- Languages: English
- Released: 2022-03-22
- Data updated: 2026-06-13
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/spren-demo/id1612317879/reviews.md

## What is Spren Demo?

Demonstrating how SprenVision™ technology can transform a smartphone into an accessible biomarker scanner, this finger-camera heart rate variability (HRV) measurement can be embedded into your app using an SDK and API, allowing health and fitness products to deliver scientifically-backed insights to their users. 

For more information about how Spren can help your fitness or wellness brand deliver a more personalized, engaging, and effective user experience, please visit spren.com.

## Key features

- Biomarker scanner demonstration
- Finger-camera HRV measurement
- SDK and API integration
- Scientifically-backed insights
- Personalized user experience


## Frequently asked questions about Spren Demo

### What is Spren Demo used for?

Spren Demo showcases how SprenVision™ technology can transform a smartphone into an accessible biomarker scanner. It demonstrates finger-camera heart rate variability (HRV) measurement for integration into health and fitness apps.

### Is Spren Demo a standalone health tracking app?

No, Spren Demo is a demonstration of the SprenVision™ technology. It is designed to show how its SDK and API can be embedded into other health and fitness products to provide biomarker insights.

### What kind of insights does Spren Demo provide?

Spren Demo provides heart rate variability (HRV) measurement, which offers scientifically-backed insights into a user's physiological state. This data can help personalize user experiences in fitness and wellness applications.

### What devices is Spren Demo compatible with?

Spren Demo is a demonstration of technology that can be embedded into apps. The specific device compatibility would depend on the final application that integrates the SprenVision™ SDK and API.

### How accurate is the HRV measurement in Spren Demo?

The description highlights that the technology delivers 'scientifically-backed insights,' suggesting a focus on accuracy for its intended use in health and fitness products. Specific accuracy metrics are not detailed in the provided information.

### Does Spren Demo require a subscription?

Spren Demo is available for free. However, the underlying SprenVision™ technology is intended for integration into other products, which may have their own pricing models.

### When was Spren Demo last updated?

Spren Demo was last updated on April 20, 2022, with version 1.0.4. It was initially released on March 22, 2022.

### What is the age rating for Spren Demo?

Spren Demo has an age rating of 4+. This indicates it is suitable for users aged four and older, with no mature content concerns.

## Version history (last 1 release)

### 1.0.4 — 2022-04-20

60s reading duration, iPhone 7 Plus/8 Plus telephoto lens

## More apps by Elite HRV Inc

- [Elite HRV: Wellness & Fitness](https://appshunter.io/ios/app/elite-hrv-wellness-and-fitness/id868829970)
- [Spren Body Composition Scanner](https://appshunter.io/ios/app/spren-body-composition-scanner/id1664503999)

All apps by Elite HRV Inc: https://appshunter.io/developer/868829973

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-13.*