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1. Introduction
Horizon OS (horizon-os.app) is a personal life management web application developed and operated by Ofek Hadar (“we,” “us,” or “our”). This privacy policy explains what personal information we collect, how we use it, how we store and protect it, and your rights regarding your data.
By using Horizon OS, you consent to the practices described in this policy. If you do not agree, please do not use the service.
2. Information We Collect
Account data (collected via Google Sign-In):
- Your name and email address
- A unique user identifier provided by Google
User-generated content (created by you within the app):
- Rituals, habits, and streak data
- Journal entries (morning and evening)
- Financial records (income, expenses, savings, subscriptions)
- Vision statements, goals, and non-negotiables
- Shopping lists
- AI Coach conversation history
Google Calendar data (accessed only with your explicit permission via OAuth):
- Calendar event data (event titles, dates, times, and descriptions) accessed via the
calendar.events scope
Technical data:
- Login timestamps and login count
We do NOT collect:
- Passwords (authentication is handled entirely by Google Sign-In)
- Location data
- Browsing history
- Contacts or address book data
- Email content
- Any Google data beyond Calendar events
3. How We Use Your Data
We use your data solely to provide the user-facing features of Horizon OS that you directly interact with:
- Providing app functionality — storing and displaying your rituals, habits, journal entries, financial records, and other content so you can access and use them within the app
- Syncing your data across devices — your data is stored securely in the cloud so you can access it from any browser on any device
- Displaying and syncing calendar events — Google Calendar data is used to display, create, update, and delete calendar events within the Horizon OS interface at your request
- Powering the AI Coach and journal prompt features — your personal context, which may include habits, goals, journal entries, coach profile, and today’s calendar events, is sent to the Anthropic API solely to generate personalized coaching responses and journal prompts within the app. This is a core user-facing feature of Horizon OS. Anthropic acts as a data processor and does not retain your data after processing each API request, per their data retention policy. Anthropic does not use your data to train AI models
We do NOT use your data — including Google user data — for any of the following purposes:
- Advertising, including targeted, personalized, retargeted, or interest-based advertising
- Selling, licensing, or distributing data to third parties, data brokers, or information resellers
- Developing, training, or improving generalized or specialized AI and/or ML models
- Determining credit-worthiness or for lending purposes
- Building databases or user profiles for purposes unrelated to providing Horizon OS features
- Any purpose other than providing the user-facing features described in this policy
4. Google Calendar Data & Limited Use Disclosure
Horizon OS’s use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements.
Specifically, regarding Google Calendar data:
- We request the
calendar.events scope only, which is the minimum scope necessary for our calendar and scheduling features
- Google Calendar data is used to provide two user-facing features: (1) displaying, creating, updating, and deleting calendar events in the Horizon OS calendar view, and (2) providing schedule-aware context to the AI Coach and journal prompt features so they can offer relevant, personalized guidance
- The only third party that receives Google Calendar data is Anthropic (AI API provider), and only to provide the AI Coach and journal prompt features described above. Anthropic processes this data solely to generate a response and does not retain or use it for any other purpose, including model training
- Google Calendar data is not used for advertising, analytics, or any purpose unrelated to the user-facing features listed above
- Google Calendar data is not sold, licensed, or transferred to any party other than Anthropic as described above
- Google Calendar data is not used to develop, train, or improve generalized or specialized AI and/or ML models
- No human at Horizon OS reads your Google Calendar data unless you provide explicit consent (such as when reporting a bug), it is necessary for security purposes, or it is required by applicable law
- You can revoke Horizon OS’s access to your Google Calendar at any time via Google Account → Security → Third-party apps with account access. Upon revocation, Horizon OS immediately stops accessing your calendar data
5. Data Sharing & Third-Party Services
We use the following third-party services solely to provide the user-facing features of Horizon OS:
- Supabase — cloud database and authentication infrastructure. Your user-generated content is stored on Supabase servers with Row Level Security. Supabase processes data as a data processor on our behalf
- Anthropic — AI API provider for the Coach and journal prompt features. User context (which may include habits, goals, journal entries, coach profile, and today’s calendar events) is sent to Anthropic solely to generate coaching responses and journal prompts. Anthropic does not retain your data after processing each API request and does not use it for model training
- Vercel — web hosting platform that serves the Horizon OS application
- Resend — email delivery service used for account-related emails (such as beta approval notifications). Only your email address is shared with Resend for this purpose
We do not share, sell, rent, or trade your personal information with any other third parties. We may disclose information only if required by applicable law or to protect the safety and security of our users.
6. Data Storage & Security
- All data is stored on Supabase (PostgreSQL database) with Row Level Security (RLS) policies ensuring each user can only access their own data
- All connections between your browser and our servers are encrypted via HTTPS/TLS
- Authentication is handled by Supabase Auth integrated with Google Sign-In — we never see or store your Google password
- Publishable API keys used client-side are protected by Row Level Security policies at the database level
7. Cookies & Local Storage
- We use browser localStorage for device-specific settings (such as display preferences) and local auto-backup data
- We do not use tracking cookies or analytics cookies
- We do not use any third-party advertising cookies
8. Data Retention & Deletion
- Your data is retained for as long as your Horizon OS account is active
- When you delete your account via Settings → Delete Account, all your data is permanently and irreversibly removed from our database
- Google Calendar data displayed in the app is fetched from Google’s servers and is not permanently stored by Horizon OS beyond what is needed to display it during your active session
- Auto-backup data stored in your browser’s localStorage is cleared when you clear your browser data
- You may also request data deletion at any time by emailing us at ofektec77@gmail.com
9. Your Rights
- Access and export your data: Settings → Data → Download backup (JSON export of all your data)
- Delete your account and all data: Settings → Delete Account
- Revoke Google Calendar access: Google Account → Security → Third-party apps with account access
- Request data deletion: Contact us at ofektec77@gmail.com
10. Children’s Privacy
Horizon OS is not intended for children under 13 years of age. We do not knowingly collect personal information from children. If you believe a child has provided us with personal data, please contact us so we can remove it.
11. Changes to This Policy
We may update this privacy policy from time to time. If we make significant changes to how we handle your data, we will notify users via the app before the changes take effect. The effective date at the top of this page will be updated accordingly.
12. Contact
If you have any questions about this privacy policy, your data, or how Horizon OS handles Google user data, please contact us: