Your data stays on your wrist

What data N2nap uses

During a nap session, N2nap reads two types of sensor data to detect when you fall asleep:

• Heart rate — sampled from the optical sensor via HealthKit to detect the drop that occurs at sleep onset.
• Wrist movement — read from the accelerometer via CoreMotion to detect stillness.

This data is processed in real time on your Apple Watch and is not stored beyond the current session's summary statistics (e.g., baseline heart rate, time to fall asleep).

Apple Health integration

If you enable the Apple Health setting, N2nap writes a sleep analysis record to the Health app after each completed nap. This includes the time you fell asleep and the time the alarm fired.

You can disable this at any time in N2nap's settings. N2nap never reads your historical Health data — it only reads heart rate during active nap sessions.

What N2nap does not do

• No data is transmitted off your device
• No analytics or usage tracking of any kind
• No user accounts or sign-in
• No advertising or ad identifiers
• No third-party SDKs or services
• No cloud storage or sync

Nap history

N2nap stores your nap session history (duration, time to fall asleep, heart rate summary) locally on your Apple Watch using on-device storage. This data stays on your device and is only visible to you within the app.

Children's privacy

N2nap does not knowingly collect data from children under 13. The app requires Apple Watch hardware and an associated iPhone, which are subject to Apple's own parental controls.

Changes to this policy

If this policy changes, the updated version will be posted at this URL with a new effective date.

Contact

Questions about this policy? Reach us at [email protected].