Privacy Policy

Last updated: January 14, 2026

This Privacy Policy explains how we collect, use, and protect your information when you use our services.

1. Data We Collect

Account Information

  • Email address (for authentication and communications)
  • Display name (optional, for personalization)
  • Account creation date

User-Generated Content

  • Canvas data (cards, edges, highlights)
  • Folder names and organization structure
  • User settings and preferences

Technical Data

  • IP address (for security and abuse prevention)
  • Device fingerprint (for fraud detection)
  • Browser type and version

Payment Information

We do not store complete payment card details. Payment processing is handled by our payment processor, Lemon Squeezy, which adheres to PCI-DSS standards. We only store encrypted card brand and last 4 digits for your reference.

2. How We Use Your Data

PurposeLegal Basis
Providing our serviceContract performance
Processing paymentsContract performance
Account communicationsContract performance
Security and fraud preventionLegitimate interest
Service improvement analyticsLegitimate interest
Marketing communicationsConsent

3. Data Security & Encryption

We implement industry-standard security measures to protect your data:

Client-Side Encryption

Your canvas content (cards, edges, highlights, etc.) is encrypted in your browser before being sent to our servers using XSalsa20-Poly1305 authenticated encryption.

Multiple Encryption Layers

All data stored in our database is protected by AWS AES-256 at-rest encryption, providing multiple layers of protection for your data.

  • All data in transit is protected by TLS encryption
  • Encryption keys are session-derived and never permanently stored
  • Regular security assessments

4. Data Sharing

We do not sell your personal data. We share data only with trusted service providers necessary to operate our service:

ServiceData Shared
Database & AuthenticationEncrypted content, email
HostingRequest metadata
Payment ProcessingEmail, payment info
AI FeaturesPrompts (user-initiated)
Transactional EmailEmail address

All providers are GDPR-compliant and bound by data processing agreements.

5. Your Rights (GDPR & Similar Regulations)

Under the General Data Protection Regulation (GDPR) and similar data protection laws, you have the following rights:

Right to Access

Request a copy of your personal data

Right to Rectification

Correct inaccurate personal data

Right to Erasure

Delete your account and all data

Right to Data Portability

Export your data in JSON format

Right to Object

Object to certain data processing

Right to Restriction

Limit how we process your data

Exercise Your Rights: Delete your account and export your data from your Profile page. For other requests, visit our Support page

6. Data Retention

Data TypeRetention Period
Account dataUntil account deletion
Canvas contentUntil account deletion
Payment records (ours)Until account deletion
Payment records (Lemon Squeezy)Per their retention policy
Server logs (Vercel)30 days

7. International Transfers

Our servers and service providers are located in the United States. If you are accessing our service from outside the US, your data will be transferred internationally.

For transfers from the EU/EEA, we rely on Standard Contractual Clauses (SCCs) approved by the European Commission to ensure appropriate safeguards.

8. AI Features

When you use AI features, your prompts are sent to OpenAI via their API.

No AI Training on Your Data

We do not use your content to train any AI models. According to OpenAI's policy, API data is not used for training by default. OpenAI may retain data for up to 30 days for safety monitoring.

What is sent: Only the specific text you choose to process.

What is NOT sent: Your entire canvas, account information, or any data you haven't explicitly included.

9. Updates to This Policy

We may update this Privacy Policy from time to time. When we make material changes, we will notify you by email and/or by posting a notice on our website before the changes take effect.

10. Contact Us

If you have any questions about this Privacy Policy, please visit our Support page.