Privacy Policy

Last updated: May 14, 2026

1. Introduction

HowdyCal ("we", "our", "the Service") is a voice-powered AI calendar assistant operated by Chris Lambert. This Privacy Policy explains how we collect, use, store, and protect your information when you use HowdyCal.

2. Information We Collect

2.1 Account & Authentication Data

When you sign in with Google, we receive and store:

Your Google account email address, display name, and profile picture
Google OAuth tokens (access and refresh tokens) used to interact with Google Calendar on your behalf

2.2 User Settings & Preferences

We store configuration you provide, including:

Your timezone and home city (including geocoded coordinates)
Custom event formatting rules and preferences
Selected calendars for display and event creation
Notification and scheduling preferences

2.3 Voice & Audio Data

When you use HowdyCal's voice features:

Audio from your microphone is streamed in real time to our speech-to-text provider (Deepgram) for transcription
We do not store raw audio recordings on our servers
Transcribed text is processed to create calendar events and may be retained to improve service quality, develop features, and provide you with a history of your voice interactions

2.4 Calendar Data

With your authorization, we access your Google Calendar data to:

Read your existing events to display them and provide scheduling context to the AI
Create, modify, and delete events on your behalf
List your available calendars
Analyze event patterns, scheduling habits, and calendar usage to provide intelligent suggestions, insights, and automated scheduling assistance
When you save your settings, extract a list of distinctive keyterms (proper nouns, venues, activities, recurring contact names and email domains) from your recent and upcoming events. To do this, event summaries, locations, short descriptions, attendee display names, and aggregated non-public email domains from a ±14-day window around your selected calendars are sent to Anthropic (Claude) along with your free-text rules; only the resulting keyterm list is stored on our servers. The calendar text itself is not retained.

2.5 Location Data

When you mention locations in voice commands or event descriptions:

Location queries are sent to Google Maps/Places API for resolution
Your home city is used to bias location searches for relevance
We may store location preferences and frequently used locations to improve suggestions

2.6 Usage & Interaction Data

We may collect information about how you interact with the Service, including:

Event creation patterns, types of events, and scheduling behaviors
Feature usage and interaction frequency
Attendee and contact information associated with calendar events you create or manage
Error logs and diagnostic information

3. How We Use Your Information

We use the information we collect to:

Provide core functionality — convert voice input into calendar events, manage your schedule, and display your calendar
Power AI features — use your calendar context, preferences, and interaction history to generate intelligent event suggestions, smart scheduling recommendations, and proactive calendar management
Improve the Service — analyze usage patterns to enhance accuracy, develop new features (such as automated scheduling, event conflict resolution, follow-up suggestions, and calendar insights), and optimize performance
Personalize your experience — remember your preferences, learn your scheduling habits, and tailor AI responses to your communication style and calendar patterns
Communicate with you — send event confirmations, scheduling suggestions, reminders, and service updates when you opt in to such notifications

4. Third-Party Services

HowdyCal integrates with the following third-party services to provide its functionality:

Google Calendar API — to read, create, modify, and delete calendar events with your authorization. Governed by the Google Privacy Policy. Our use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
Google Maps/Places API — to resolve location names and addresses mentioned in your voice commands
Deepgram — to convert your speech to text in real time. Audio is streamed directly and is subject to Deepgram's Privacy Policy
Anthropic (Claude) — to process transcripts and generate structured calendar events using AI, and (on settings save only) to extract distinctive keyterms from your free-text rules and a ±14-day window of your selected-calendar event summaries, locations, short descriptions, and attendee display names + non-public email domains, so that voice transcription is biased to recognize the vocabulary you actually use. Data sent to Anthropic is subject to Anthropic's Privacy Policy

We do not sell your personal information to any third party.

5. Data Storage & Security

Your data is stored in encrypted, server-only app storage (Cloudflare)
Google OAuth tokens are stored securely and used only to access Google Calendar on your behalf
All communication between your browser and HowdyCal is encrypted via HTTPS/TLS
We implement reasonable technical and organizational security measures to protect your information

6. Data Retention & Deletion

Your account data and settings are retained as long as your account is active
Voice transcripts, interaction history, and usage data may be retained to improve the Service and provide personalized features
You can disconnect your Google Calendar at any time from within the app, which revokes our access and deletes your stored Google tokens
To request complete deletion of all your data, contact us at the email below

7. Cookies & Session Data

HowdyCal uses the appato workspace session to keep you signed in. We do not use tracking cookies or third-party analytics cookies.

8. Your Rights

You have the right to:

Access the personal data we hold about you
Request correction or deletion of your data
Revoke Google Calendar access at any time through the app or via your Google Account permissions
Opt out of any future data-driven features or personalization

9. Children's Privacy

HowdyCal is not directed at children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us so we can delete it.

10. Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be reflected on this page with an updated "Last updated" date. Continued use of HowdyCal after changes constitutes acceptance of the revised policy.

11. Contact

If you have questions about this Privacy Policy or your data, contact us at:

voicecal@clambert.com