Good Night

Privacy Policy

Effective date: July 5, 2026

Good Night ("the app," "we," "us") is developed by Ryan Hernalsteen. This policy explains what data the app accesses, how it's used, and what leaves your device, in plain language, followed by the specifics.

Summary

  • Your Apple Health data (heart rate, HRV, sleep, activity) is processed entirely on your device and is never transmitted to us or to any server we control. We don't have a server, so there's nothing to send it to.
  • Your location is used only to check the local weather, via Apple's WeatherKit, so the app can suggest whether it's a good evening for a short walk. It is not stored or transmitted to us.
  • If you enable iCloud sync, your settings and score history sync through your own iCloud account (Apple's infrastructure), not through us, and we have no access to it.
  • We don't use analytics, advertising, or tracking SDKs of any kind, and the app doesn't ask for or use App Tracking Transparency permission.
  • There is no account creation, sign-up, or email collection, except if you choose to email us directly for support.

Information We Access

Health data (via Apple HealthKit)

With your permission, the app reads the following from Apple Health, to calculate your nightly sleep-readiness score:

  • Heart Rate Variability (HRV)
  • Resting Heart Rate
  • Heart Rate (used for the evening wind-down trend and the "Current HR" score component)
  • Active Energy Burned (activity level)
  • Sleep Analysis (used to detect your typical bedtime and to show sleep history)
  • Respiratory Rate (used only as supplementary context, not scored)

This data is read from HealthKit, processed on your device to compute your score, and is never transmitted anywhere. We do not have a backend server that receives, stores, or has access to your health data in any form.

You can revoke this access at any time in Settings → Privacy & Security → Health → Good Night, or from within the app's own Settings screen.

Location data

The app requests "When In Use" location access to check the local weather forecast (via Apple's WeatherKit) and suggest whether conditions are good for an evening walk as part of your wind-down routine. Your location is sent to Apple's WeatherKit service to retrieve the forecast, governed by Apple's own privacy practices. We do not store your location, and it is not linked to any other data the app holds about you.

If you decline or later revoke location access, the app simply omits weather-based guidance. Every other feature works normally.

iCloud sync (optional)

If enabled, the app syncs your settings and score history using NSUbiquitousKeyValueStore, Apple's iCloud key-value storage tied to your own Apple ID. This lets your data follow you across your own devices. This sync happens entirely within Apple's iCloud infrastructure and your own account. We have no access to this data, and it is never routed through any server we operate.

What we don't collect

  • No account registration, no sign-up, no password, no email address (unless you choose to email us for support, in which case we have whatever you send us, like any email).
  • No analytics or crash-reporting SDKs.
  • No advertising identifiers or ad networks.
  • No third-party tracking of any kind. The app does not use App Tracking Transparency because it does not track you.

How Information Is Used

Health and activity data is used solely to compute your on-device sleep-readiness score, sub-score breakdowns, trends, and wind-down guidance. Location is used solely to fetch a local weather condition for wind-down suggestions. Nothing is used for advertising, profiling, or any purpose other than the features you see in the app.

Data Sharing

We do not sell, rent, or share your data with any third party. The only parties involved in processing any data are:

We have no analytics vendors, advertising partners, or data brokers of any kind.

Data Storage, Retention, and Deletion

All health data, scores, and history are stored locally on your device (and, if you opt in, within your own iCloud account). Deleting the app removes its local data. Health data itself remains in the Health app, governed by Apple's Health data policies, regardless of whether Good Night is installed. iCloud-synced data can be managed or removed via your device's iCloud settings.

Your Choices

  • Health access: grant, deny, or revoke at any time in iOS Settings → Privacy & Security → Health, or Settings → Health → Data Access & Devices.
  • Location access: grant, deny, or revoke at any time in iOS Settings → Privacy & Security → Location Services.
  • Notifications: enable or disable evening wind-down reminders in iOS Settings → Notifications, or within the app.
  • iCloud sync: managed via your device's iCloud settings.
  • Delete your data: delete the app to remove all locally stored app data.

Children's Privacy

Good Night is not directed at children under 13, and we do not knowingly collect data from children under 13.

Security

Because your health and activity data never leaves your device (aside from your own iCloud account, under Apple's security model), the primary safeguard is the same device and iCloud account security you already rely on for the rest of your Apple devices, such as your device passcode, Face ID or Touch ID, and two-factor authentication on your Apple ID.

Changes to This Policy

If this policy changes, the effective date at the top of this page will be updated. Continued use of the app after changes take effect constitutes acceptance of the revised policy.

Contact

Questions about this policy or the app's data practices can be sent to [email protected].