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Estimate pulse with the iPhone camera in about 16 seconds — private, on-device BPM tracking.
APP STORE
DS Heart Rate
CAMERA BPM
STATUS
Active
YEAR
2019–2025
TYPE
apps
TECH
iOS · Camera
CLIENT OR PRODUCT
Independent iOS product by Sidi Li.
MY ROLE
Independent product builder — iOS health utility
THE PROBLEM
People want a quick wellness BPM check without buying a wearable or creating an account.
CONSTRAINTS
- •Camera + flash signal quality guidance
- •On-device processing, no ads/analytics requirement
- •Free tier + lifetime Pro monetization
- •Trends, Apple Health write, reminders for Pro
THE INVESTIGATION
Built around a simple measurement loop: cover camera/flash, stabilize signal, estimate BPM, store history.
THE STRATEGY
Ship a privacy-first camera estimate tool with clear free limits and a one-time Pro unlock instead of subscriptions.
WHAT I BUILT
- •Camera-based pulse estimation pipeline
- •History, trends, and CSV export
- •Lifetime Pro unlock path
- •Optional Apple Health integration for Pro
THE HARD PART
Guiding users to a usable optical signal quickly enough for a trustworthy estimate.
THE VERDICT
- •Available on the App Store for years as an independent product
- •Privacy-oriented measurement model
- •Sustainable one-time Pro monetization
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NO DETOURS•NO FLUFF•JUST SHIPPED•SE HABLA CODE
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