Visualize your raw heart rate variability data directly on your Apple Watch face with a dynamic sparkline complication. Get immediate insights into your body's trends without opaque scores or labels. A companion iPhone app provides detailed views and guidance.
1.0.6
May 13, 2026
Adds support for showing current Pro unlock promotions in the iPhone app and Apple Watch app when a campaign is active.
$4.99
HRVSpark Tip Jar
A one-time, optional tip to support HRVSpark developer.
Thank you! This is exactly why I built HRVSpark. Glad the raw data, ad-free, subscription-free approach resonates with you. If you ever have feedback or feature requests, I'm always listening at: info@filamentlabs.io.
HRVSpark displays your raw Heart Rate Variability data as a complication on your Apple Watch face. It offers a free 8-hour view and a Pro version for longer-term data analysis, focusing on presenting your actual numbers without interpretation.
HRVSpark is free to try with a one-time Pro unlock for extended features. There are no subscriptions or recurring charges. The app is also ad-free and does not track user data.
No, HRVSpark is completely ad-free. The developer explicitly states 'No ads. Ever.' This ensures an uninterrupted user experience focused on your health data.
HRVSpark is designed to work with Apple Watch, iPhone, and iPad. The primary functionality is on the Apple Watch face, with a companion app for iPhone and iPad.
The latest version of HRVSpark is 1.0.6, last updated on May 13, 2026. This indicates a relatively recent update, suggesting ongoing development and support for the application.
HRVSpark has an age rating of 4+. This means it is suitable for users of all ages, with no mature content or themes present in the application.
Unlike many HRV apps that provide 'readiness scores' or 'stress labels', HRVSpark shows your raw data directly. This allows users to build their own understanding of what their HRV numbers mean over time.
Yes, while the free version offers an 8-hour view, the Pro version of HRVSpark provides complication views for 24 hours, 7 days, and 30 days, allowing for broader trend analysis.
