Quartz
Know when you're truly focused.
Quartz is a focus-tracking app for iPhone and Apple Watch that helps you measure deep work in real time. It blends heart rate, HRV, and movement into a live score, tracks your best moments, and turns each session into clear, actionable insights.
Six systems behind measurable focus
Apple Watch Sensing
Quartz streams heart rate, HRV, and movement from your Apple Watch so every focus session is measured, not guessed.
Real-Time Focus Score
A 0-100 focus score is computed continuously from biometric signals, then smoothed so feedback stays responsive without noise.
Session Timeline
Review average score, peak moments, deep-focus duration, and full session history to understand your strongest work windows.
Live Activity + Widgets
See your current focus state and daily stats from Lock Screen, Dynamic Island, and Home Screen widgets at a glance.
Calibration Baseline
Quartz adapts to your physiology by calibrating baseline values over early sessions for more accurate personal scoring.
HealthKit Integration
Completed focus sessions can be saved as mindful minutes in Apple Health, connecting deep work to your wider wellness data.
Ready to start?
Get Quartz for iPhone + Apple Watch