DS Heart Rate: Pulse Tracker

Estimate your pulse with the iPhone camera in about 16 seconds, then follow clear, private heart-rate and BPM trends.

DS Heart Rate is a general wellness and fitness tracker. Rest a fingertip over the rear camera and flash; the app analyzes subtle color changes on device and produces an estimated BPM. No account, external sensor, ads, or analytics are required.

FREE TO START. LIFETIME PRO.
• Your first 5 real measurements are free, followed by 1 free measurement every day
• A one-time Lifetime Pro purchase unlocks unlimited measurements, month/year trends, Apple Health writing, daily reminders, and supported on-device insights
• No subscription or ads; all saved readings and CSV export always remain available

FAST CAMERA ESTIMATES
• Live signal-quality guidance helps you cover the camera and flash correctly
• A stable estimate appears after about 16 seconds of usable signal
• Add context such as resting, before exercise, after exercise, stress, or bedtime

UNDERSTAND PERSONAL TRENDS
• Today overview, latest reading, 7-day average, and measurement streak
• Weekly trends are free; Lifetime Pro adds month and year charts
• Add notes, view every saved reading, and export CSV at any time

PRIVATE BY DESIGN
• Camera frames are processed only in memory; no photos or video are saved
• Readings stay on device and are excluded from this app's iCloud backup
• No account, advertising, analytics, or developer-operated server
• Apple Health is optional: the app writes only estimates you choose to save and does not read existing Health data
• Supported on-device insights use Apple's private model without sending readings to a developer server

METHOD AND LIMITATIONS
DS Heart Rate uses camera photoplethysmography (PPG) to estimate pulse timing and checks finger coverage and signal quality. Motion, cold fingers, pressure, skin perfusion, ambient light, flash heat, and camera hardware can affect results.

IMPORTANT
DS Heart Rate is not a medical device and has not been clinically validated against a regulated medical device. Results are for general wellness trends only. Do not use the app for diagnosis, treatment, emergencies, or to delay care. Consult a qualified healthcare professional if you have concerning symptoms or persistently unusual readings.