Features
Understand your sleep
Morning Insights
Wake up to a beautiful summary of last night's sleep. See your duration, sleep quality score, and how you compare to your personal baseline - all at a glance.
Sleep Stage Analysis
Detailed breakdowns of Deep, REM, Core, and Awake stages from your Apple Watch. Understand which parts of your sleep are improving and which need attention.
Health Vitals Tracking
Go beyond sleep stages with heart rate, HRV, respiratory rate, blood oxygen (SpO2), and wrist temperature - all correlated with your sleep quality.
Smart Evening Mode
After 6 PM, Nightmark switches to evening mode with personalised bedtime recommendations based on your sleep patterns, goals, and recent trends.
Personalised Insight Engine
Nightmark learns your unique patterns over 14 days and surfaces meaningful insights - trend changes, consistency streaks, workout-sleep correlations, and more.
Jet Lag Recovery
Travelling across time zones? Nightmark detects timezone changes automatically and provides tailored recovery guidance to help you adjust faster.
Screenshots
See it in action
Today View
Sleep Timeline
Sleep Details
Weekly Insights
Trend Analysis
Swipe to explore
Today View
About
Why Nightmark?
Nightmark transforms your Apple Watch sleep data into beautiful, actionable insights. Wake up each morning to a personalised summary of how you slept - with sleep stage breakdowns, heart rate trends, and health vitals - all analysed against your own personal baseline, not generic averages.
In the evening, get smart bedtime recommendations tailored to your patterns. Everything is processed on-device. Your health data never leaves your iPhone.
App Details
Ready to understand your sleep?
Nightmark is coming soon to the App Store.