Privacy Policy
Last Updated: December 2025
Andy Arevalo ("we," "us," or "our") is committed to protecting your privacy. This policy covers all our apps: Student Guardian (SchoolSync), OnTime Speaker Pro, OnStage Timer Pro, Not Another Twin Calculator, Not Another Stage Timer, Duse – Habit Tracker, ThermoTimer, RoadWatch CA, CareLedger, and future releases.
1. Information We Do NOT Collect
Our apps do not gather:
- Personal identifiers (name, email, phone) unless explicitly provided for app functionality
- Precise geolocation data (RoadWatch CA uses approximate location only to show nearby cameras)
- Contact information
- Media files
- Health metrics
- Usage patterns or analytics
- Tracking data
- Device IDs
- Apple ID-linked information
We do not build user profiles, track behavior, or sell data.
2. Google API Services Usage (Student Guardian)
Student Guardian (SchoolSync) uses Google API Services to provide email synchronization functionality. This section describes our use of Google user data in compliance with the Google API Services User Data Policy.
2.1 Data We Access
When you connect your Gmail account, we request access to:
- Gmail Read-Only Access (gmail.readonly): To read and display your school-related emails within the app
- Email Address (userinfo.email): To identify your account and display your email address in the app
2.2 How We Use Google User Data
Your Google data is used exclusively to:
- Fetch and display emails from senders you designate as "trusted sources" (schools, teachers)
- Extract calendar events and dates from school communications
- Generate AI-powered summaries of school emails (with your explicit action)
- Identify grade notifications and newsletter content
2.3 Data Storage and Protection
Your Google data is protected through multiple security measures:
- Local-First Storage: Email content is stored locally on your device, not on our servers
- Encrypted Credentials: OAuth tokens are stored in iOS Keychain with AES-256 encryption
- Secure Transmission: All API communications use TLS 1.3 encryption
- No Server Storage: We do not store your emails, attachments, or email content on any external servers
- Token Security: Access tokens are refreshed automatically and can be revoked at any time through your Google Account settings
2.4 Data Retention and Deletion
- Email data is cached locally for offline access and deleted when you disconnect your account
- You can disconnect your Google account at any time in Settings, which immediately deletes all cached email data
- You can also revoke access via Google Account Permissions
2.5 AI/ML Training Disclosure
2.6 Third-Party Sharing
We do not share, sell, or transfer your Google user data to third parties except:
- When you explicitly request an AI summary (processed by our summarization service)
- As required by law or valid legal process
3. Device-Only Storage
Limited information may remain locally on your device:
- Email data and settings (Student Guardian)
- Habit entries (Duse)
- Calculation records (Twin Calculator)
- Timer configurations (Stage Timer/Speaker Timer)
- Meeting Mode information (OnTime Speaker Pro)
- Session history (ThermoTimer)
- Favorite cameras and groups (RoadWatch CA)
- Patient profiles, medications, dose events, and caregiver notes (CareLedger)
Data remains on-device unless intentionally exported or shared by you.
3.2 CareLedger - Health Data
CareLedger handles sensitive health-related information with extra care:
- Local Storage Only: All patient profiles, medications, dose events, symptoms, and caregiver notes are stored exclusively on your device
- No Server Storage: Your health information is never transmitted to or stored on our servers
- AI Features (Optional): When you use AI-powered features (prescription scanning, medication education), only the specific text or image being processed is sent to the AI service
- AI Data Handling: AI requests are processed in real-time and not retained by the AI service
- Export Control: You choose when and how to export or share your data (e.g., Visit Prep PDF summaries)
3.1 RoadWatch CA - Location Data
RoadWatch CA requests location permission to:
- Show traffic cameras near your current location
- Calculate and display distances to cameras
- Sort cameras by proximity
4. Payment Processing
All transactions occur through Apple's system using your Apple ID. We receive only anonymized subscription status from Apple, never your payment details.
5. No Third-Party Analytics
Our apps exclude: Google Analytics, Firebase Analytics, advertising SDKs, tracking tools, and social plugins.
6. User-Initiated Data Sharing
Exported information (such as timer reports via email/messages or shared calendar events) remains outside our control once shared.
7. Child Safety
Our apps contain no child-specific data collection mechanisms. Student Guardian is designed for parents to manage their children's school communications; children's personal data is not collected or processed.
8. Data Security
We implement industry-standard security measures to protect your data:
- Encryption at Rest: Sensitive data stored using iOS Keychain (AES-256)
- Encryption in Transit: All network communications use TLS 1.3
- Secure Authentication: OAuth 2.0 with PKCE for third-party account connections
- No Plain Text Storage: Tokens and credentials are never stored in plain text
- Automatic Token Refresh: Access tokens are short-lived and automatically refreshed
9. Your Rights
You have the right to:
- Access: View all data stored by our apps on your device
- Delete: Remove all app data by deleting the app or using in-app data deletion options
- Revoke: Disconnect third-party accounts (Gmail, Outlook) at any time
- Export: Export your data where export functionality is provided
10. Policy Updates
Changes will be published on this page with an updated "Last Updated" date. Continued use of our apps after changes constitutes acceptance of the updated policy.
11. Contact
For privacy-related questions or to exercise your data rights:
Email: [email protected]
We typically respond within 48 hours.