Privacy Policy
Last Updated: August 07, 2025
Overview
Time-Check is designed with privacy as the foundation. This privacy policy explains how our iOS application and service collect, use, and protect your information when you use Time-Check for anonymous calendar availability sharing.
Calendar Data Processing
- Local Processing Only: Your calendar events are processed locally on your iOS device
- No Event Details: Meeting titles, participants, locations, or other event content are not accessed
- Availability Only: Only busy/free time slots are analyzed and encrypted before transmission
- Temporary Storage: Calendar data is only held in device memory during processing and immediately discarded
Anonymous Identifiers
- Device IDs: We generate rotating anonymous device identifiers that cannot be linked to your identity
- No Personal Tracking: These identifiers rotate automatically and cannot be used to track you across sessions
- Email Verification: Your email address is used only to route availability requests to your device
Technical Data
- Request Metadata: Anonymous request timestamps and basic system information for service operation
- Performance Metrics: Aggregated, non-identifiable performance data to improve service reliability
- Error Logs: Anonymous error information for debugging, with all personal identifiers removed
Primary Functions
- Availability Sharing: Process and encrypt your calendar availability for secure transmission
- Request Routing: Route availability requests to appropriate devices using anonymous identifiers
- Service Operation: Maintain and improve the Time-Check service infrastructure
Data Processing Principles
- Minimal Collection: We collect only the minimum data necessary for service operation
- Purpose Limitation: Data is used only for the specific purposes outlined in this policy
- Storage Minimization: All data is automatically deleted within 30 days
Data Protection and Security
Encryption
- End-to-End Encryption: All availability data is encrypted on your device before transmission
- Zero-Knowledge Architecture: Our servers cannot decrypt your availability information
- Secure Keys: Encryption keys are generated locally and never transmitted to our servers
Anonymous Design
- No User Accounts: The service operates without traditional user accounts or profiles
- Rolling Identifiers: Device identifiers change automatically to prevent tracking
- No Cross-Request Linking: Requests cannot be linked to previous activity
Data Retention
- Automatic Deletion: All request and response data is automatically deleted within 30 days
- No Persistent Storage: Your personal information is not stored permanently on our servers
- Local Data Only: Calendar access permissions remain local to your device
Third-Party Services
iOS Integration
- Apple Calendar API: We use iOS EventKit to read calendar availability (not event details)
- Apple Security Framework: We utilize iOS cryptographic libraries for secure key generation
- Background Processing: We use iOS background processing for timely availability updates
Service Infrastructure
- Cloud Hosting: Our service runs on secure cloud infrastructure with industry-standard protections
- No Analytics: We do not use third-party analytics or tracking services
- No Advertising: We do not share data with advertising networks or similar services
Your Rights and Controls
iOS App Controls
- Calendar Permission: You can revoke calendar access at any time through iOS Settings
- Delete App: Removing the app immediately stops all data processing and sharing
- Notification Settings: Control when and how you receive availability requests
Data Rights
- Access Limitation: Due to our anonymous design, we cannot identify or retrieve your specific data
- Automatic Deletion: All data is automatically deleted, eliminating the need for manual deletion requests
- No Profile Data: Since we don’t maintain user profiles, there is no persistent data to modify or delete
Support and Questions
If you have questions about this privacy policy or our privacy practices:
Privacy Officer
For specific privacy concerns or to report privacy incidents:
- Email: privacy (at) time-check (dot) com
Changes to This Policy
We may update this privacy policy to reflect changes in our practices or applicable law. When we make changes:
- Notification: We will update the “Last Updated” date at the top of this policy
- Material Changes: For significant changes, we will provide notice through the app or our website
- Continued Use: Your continued use of Time-Check after changes indicates acceptance of the updated policy
Regulatory Compliance
- CCPA Compliance: We comply with applicable California Consumer Privacy Act requirements
- GDPR Considerations: While our anonymous design limits GDPR applicability, we follow privacy-by-design principles
- Mobile Privacy: We comply with Apple App Store privacy requirements and iOS privacy guidelines
Technical Implementation Notes
Privacy by Design
- Anonymous by Default: Our system is designed so that personal identification is technically impossible
- Minimal Attack Surface: Limited data collection reduces potential privacy risks
- Cryptographic Protection: All sensitive operations use proven cryptographic methods
Security Measures
- Code Auditing: Our codebase undergoes regular security reviews
- Penetration Testing: We conduct regular security assessments of our infrastructure
- Incident Response: We maintain procedures for responding to potential security incidents
Note: This privacy policy covers the Time-Check iOS application and associated backend services. For questions about privacy practices, please contact us using the information provided above.