Evanescent - Privacy Policy

Evanescent - Privacy Policy

Privacy Policy

Last updated: 2025-11-17

Overview

Evanescent is designed with privacy as a core principle. Your data stays on your device, period. We don't collect, transmit, or store any of your information.

Data Collection

We collect zero data.

Evanescent does not:

  • Collect personal information
  • Track your usage
  • Send analytics
  • Use third-party tracking tools
  • Require user accounts
  • Connect to external servers
  • Store data in the cloud

Data Storage

All reminder content and app settings are stored locally on your Mac using the standard macOS data persistence layer (SwiftData). Your data never leaves your device.

What's stored locally:

  • Reminder text and metadata (creation date, due date, category, etc.)
  • App settings and preferences
  • Custom categories
  • Font and color customization choices
  • Language preference

Where it's stored:

  • In your Mac's local application support directory
  • Protected by macOS sandboxing and file permissions
  • Accessible only to the Evanescent app on your device

Question Generation

When you use the recovery feature, Evanescent generates questions from your reminder text using on-device Natural Language Processing (NLP). This happens entirely on your Mac
with zero network activity.

Recovery system privacy:

  • All NLP processing happens locally
  • No data sent to external services
  • Questions generated fresh each time (not stored)
  • No machine learning models trained on your data

Network Activity

Evanescent makes zero network requests. The app works completely offline and does not communicate with any external servers.

Popup Notifications

Optional popup reminders are generated and displayed locally by your Mac. No notification data is sent to external services or notification providers.

Your Control

You have complete control over your data:

  • Export: Your data is stored in standard SwiftData format on your Mac
  • Delete: Uninstalling the app removes all locally stored data
  • No Account: No login credentials or account recovery needed since there are no accounts

macOS Permissions

Evanescent may request the following macOS permissions:

  • Notifications: To display optional popup reminders (can be disabled in macOS System Settings)
  • File Access: Standard app sandbox permissions to store data in your local application support folder

These permissions are used solely for local app functionality and do not involve data transmission.

Children's Privacy

Evanescent does not collect any data from users of any age. The app is safe for all ages from a privacy perspective.

Changes to This Policy

If we ever change how privacy works in Evanescent (which would require fundamental architectural changes), we will update this policy and the app version notes. However, our commitment to local-first, privacy-respecting software is a core design principle.

Contact

If you have questions about privacy in Evanescent, please contact us at:

  • Email: evanescent@paulogarcia.com

Technical Details for Security Researchers

  • Data Format: SwiftData (Core Data) local storage
  • Sandbox: Full macOS app sandbox compliance
  • Network: Zero network stack usage
  • NLP: On-device Apple NaturalLanguage framework
  • Dependencies: No third-party analytics, crash reporting, or tracking SDKs

Your Privacy Rights (Jurisdiction-Specific)

For Users in the European Union (GDPR)

Since Evanescent collects no personal data and all data remains on your device, GDPR data subject rights (access, rectification, erasure, etc.) are inherently satisfied—you have
complete control over your local data at all times.

For Users in California (CCPA)

Evanescent does not sell personal information because we don't collect any personal information in the first place.

For Users Worldwide

Regardless of your location, Evanescent's privacy model is simple: your data is yours, stored locally, with zero collection or transmission.

Summary: Evanescent sees none of your data. It never leaves your Mac.