caffeine rhythm

privacy policy

Last updated: March 2026

Introduction

Hatching Point (“we,” “our,” or “us”) is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use the Caffeine Rhythm mobile application.

Information We Collect

  • Profile Information: Name, age, weight, biological sex, and metabolism preferences you provide during setup
  • Caffeine Data: Drink logs, timestamps, and caffeine amounts you record
  • Health Data: With your permission, caffeine intake written to Apple Health and sleep data read from Apple Health
  • Purchase Information: Subscription status (processed by Apple, we don't see payment details)

How We Use Your Information

  • Calculate personalized caffeine metabolism and half-life
  • Provide real-time caffeine level tracking
  • Generate sleep safety recommendations
  • Process your subscription
  • Respond to support requests

Third-Party Services

  • Apple: App Store handles purchases and subscriptions. Data is stored locally on your device using Apple frameworks.
  • Apple HealthKit: With your explicit permission, we write caffeine intake data to and read sleep analysis data from Apple Health. This data is never sent to our servers.

Third-Party AI Service — Data Sharing Disclosure

Caffeine Rhythm uses OpenAI's API (“OpenAI”, located at openai.com) as a third-party artificial intelligence service provider to power AI insights within the app. This section explains exactly what data is shared, how it is used, and your rights.

  • What data is sent to OpenAI: When you use AI-powered insights, anonymized caffeine consumption patterns and context required to generate relevant insights are transmitted to OpenAI's servers. No personal data (name, email, Apple ID, location, or payment information) is sent.
  • Purpose: Data is sent solely to generate personalized caffeine insights. It is not used for advertising, profiling, or any other purpose.
  • OpenAI's data handling: OpenAI does not use data submitted via its API to train or improve its models. API data may be retained by OpenAI for up to 30 days for trust and safety purposes, after which it is deleted. See openai.com/policies/api-data-usage-policies.
  • Your consent: Before any data is sent to OpenAI, the app displays a clear disclosure screen. You must agree before AI features become active.
  • Your control: AI features are entirely optional. If you choose not to consent, the app continues to function without AI capabilities.
  • Security: All data transmitted to OpenAI is encrypted using industry-standard HTTPS/TLS encryption.

Data Storage and Security

  • Local Storage: Your data is stored locally on your device and Apple Watch.
  • No Cloud Backup by Us: We do not maintain copies of your data on our servers.
  • Watch Sync: Data syncs between your iPhone and Apple Watch using Apple's Watch Connectivity framework.
  • Encryption: All data transmitted uses industry-standard encryption (HTTPS/TLS).

Your Rights

  • Access: View all data stored in the app
  • Delete: Remove all your data at any time via Settings
  • Cancel: Cancel subscription through App Store
  • HealthKit: Revoke Health access at any time via iOS Settings

Children's Privacy

Caffeine Rhythm is not intended for children under 13. We do not knowingly collect personal information from children under 13.

Contact Us

Questions? Contact us at inquiry@hatchingpoint.com