Privacy Policy

Pulse — Daily Readiness Score

Last updated: March 6, 2026

Overview

Pulse is designed with your privacy as a priority. Your health and fitness data stays on your device. Pulse does not collect, transmit, or sell your personal information to anyone.

What data Pulse accesses

Pulse reads the following data from Apple HealthKit with your explicit permission:

• Resting heart rate
• Heart rate variability (HRV)
• Sleep duration and quality
• Step count
• Active energy (calories burned)
• Workout history

Pulse also collects self-reported energy ratings (1–5) that you enter during your morning and evening check-ins.

How your data is used

All data accessed by Pulse is used solely to calculate your daily readiness score and to personalize your experience over time through an on-device machine learning model. Specifically:

• HealthKit data and your self-reported energy ratings are combined to generate a readiness score from 0 to 100.
• An on-device machine learning model learns your personal patterns to improve the accuracy of your readiness score. This model runs entirely on your iPhone and is never uploaded or shared.
• Your data is used exclusively to provide and improve the core functionality of the app for you.

What Pulse does not do

• No data leaves your device. Pulse does not transmit your health data, energy ratings, readiness scores, or any other personal information to external servers, cloud services, or third parties.
• No data is written back to HealthKit. Pulse reads from HealthKit but does not write or modify any HealthKit records.
• No advertising or data mining. Your data is never used for advertising, marketing, analytics, or any form of data mining.
• No third-party SDKs. Pulse does not include any third-party analytics, crash reporting, advertising, or tracking frameworks.
• No account required. Pulse does not collect your name, email address, or any other personally identifiable information. There is no account creation or login.

iCloud sync

Pulse may use Apple's iCloud (CloudKit) to sync your readiness scores and self-reported energy ratings across your devices. This sync is handled entirely through Apple's infrastructure and is subject to Apple's privacy policies and end-to-end encryption. Only your app-generated data — readiness scores, energy ratings, and preferences — is synced. Raw HealthKit data is never stored in iCloud and is always read directly from HealthKit on each device.

You can disable iCloud sync for Pulse in your device's iCloud settings at any time.

Data storage and security

All data is stored locally on your device using Apple's standard data protection. When your device is locked, your health data is encrypted and inaccessible. Pulse does not implement its own authentication or storage systems — it relies entirely on the security of iOS and HealthKit.

Your control

You are in full control of your data at all times:

• You can grant or revoke Pulse's access to any HealthKit data type at any time in Settings > Apps > Health > Data Access & Devices.
• You can delete the app at any time, which removes all locally stored data including your readiness history, energy ratings, and the personalized machine learning model.
• You can disable iCloud sync in your device settings.

Children's privacy

Pulse is not directed at children under the age of 13. We do not knowingly collect any data from children.

Changes to this policy

If this privacy policy is updated, the revised version will be posted here with an updated date. Continued use of Pulse after changes are posted constitutes acceptance of the revised policy.

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Contact

If you have questions about this privacy policy or Pulse's data practices, you can reach us at:

pulse.readiness.score@gmail.com

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