Archived App (Last seen on 22 Aug 2025)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This application demonstrates how smartphone camera technology can be used to measure heart rate variability (HRV). It allows health and fitness products to integrate scientifically-backed insights into their offerings.
What's New in Spren Demo
1.0.4
April 20, 2022
60s reading duration, iPhone 7 Plus/8 Plus telephoto lens
Developer apps
FAQ
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.