Every birthday holds a secret hand of cards. Cardy reveals your daily readings, personality insights, and connections — derived from an ancient mathematical system encoded in a standard deck.
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Each day maps to a card through a precise mathematical cycle. Listen to its story, see how the numbers align, and discover what the day's equation reveals about you.
Your birthday is a coordinate in the card calendar. The formula maps it to a unique card that reveals your personality, strengths, and life path.
Add friends and family to calculate how your cards relate. The math between two cards reveals compatibility, shared patterns, and deeper bonds.
Free to download. Your birth card is already calculated.
Bug, idea, question, or just want to say hi — we'd love to hear from you.
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Last Updated: April 13, 2026
Your privacy is important to us. This Privacy Policy explains how Cardy ("the App") collects, uses, and protects your information.
Account Information: When you sign up, we collect your name, email address, and birthday. Your birthday is used to calculate your card profile using our mathematical card calendar system.
Mood and Emotional Data: If you use the check-in feature, we collect your mood selection, chosen topics, and any free-text you provide. This data reflects your emotional state and is treated as sensitive information. It is used solely to generate your personalized reflection.
Journal Entries: If you use the journaling feature, we collect the text you write. Journal entries are stored with your account and used only to display your personal journal history.
Contacts: If you choose to import birthdays from your contacts, we access contact names and birthdays only. This data is used solely to calculate card profiles for your contacts and is not linked to your identity.
Usage Data: We collect anonymous usage data to improve the App, such as which features are used and general app performance metrics.
We use your information to:
Cardy uses AI (provided by Anthropic) to generate personalized reflections. To create these reflections, we send the following to Anthropic's servers for processing:
This data is sent securely via our servers and is not stored by Anthropic beyond the duration of the request. We do not use your data to train AI models. AI-generated content is for entertainment and personal exploration only.
We do not sell your personal information. We share data only with:
These providers process data solely to deliver their services and are bound by their own privacy policies.
Your data is stored securely using Supabase with row-level security policies. We use industry-standard encryption for data in transit and at rest. Check-in and journal data is retained for as long as your account is active. You may delete individual check-ins or journal entries at any time within the App.
You can:
If you are a resident of California, you have additional rights under the CCPA, including the right to know what data we collect, to request deletion, and to opt out of the sale of personal information (we do not sell your data). If you are a resident of the EU/EEA, you have rights under GDPR including access, rectification, erasure, and data portability. To exercise these rights, contact us at support@cardy.today.
Cardy is not intended for children under 13. We do not knowingly collect information from children under 13. If we learn we have collected data from a child under 13, we will delete it promptly.
We may update this Privacy Policy from time to time. We will notify you of significant changes through the App.
If you have questions about this Privacy Policy, please contact us at support@cardy.today.
Last Updated: February 20, 2026
Welcome to Cardy. By using our app, you agree to these Terms of Service. Please read them carefully.
By downloading, installing, or using Cardy ("the App"), you agree to be bound by these Terms of Service ("Terms"). If you do not agree, do not use the App.
Cardy is a personal exploration and entertainment app that uses a mathematical card calendar system to generate personalized card profiles, daily card stories, and reflections. Card meanings and reflections are for personal exploration and entertainment purposes only. They are not intended as professional, medical, psychological, or financial advice.
You must be at least 13 years old to use Cardy. If you are under 18, you must have parental or guardian consent.
You may create an account using your email address or Apple Sign In. You are responsible for maintaining the confidentiality of your account credentials and for all activities under your account.
Cardy offers optional premium features through auto-renewable subscriptions. Subscriptions are billed through Apple's App Store. You can manage or cancel your subscription at any time through your Apple ID settings. Refunds are handled by Apple according to their refund policies.
Any text you provide during check-ins or journaling is your content. We use it solely to generate personalized reflections through our AI provider (Anthropic). Your content is not sold or used for AI training. You retain ownership of your content.
You agree not to misuse the App, including but not limited to: reverse engineering, attempting unauthorized access, or using the App for any unlawful purpose.
All content, design, and technology in Cardy are owned by or licensed to us. You may not copy, modify, or distribute any part of the App without our written permission.
The App is provided "as is" without warranties of any kind. Card profiles, daily stories, and AI-generated reflections are for entertainment and personal exploration only. We do not guarantee the accuracy or applicability of any content.
To the maximum extent permitted by law, we shall not be liable for any indirect, incidental, or consequential damages arising from your use of the App.
We may update these Terms from time to time. Continued use of the App after changes constitutes acceptance of the updated Terms.
If you have questions about these Terms, please contact us at support@cardy.today.