Privacy-First Design
Your words remain yours. Undrstnd processes definitions in real-time, never storing or retaining what you read. Clarity without compromise.
Your privacy is our competitive advantage.
Trust Without Compromise
Four pillars of trust that safeguard your reading and preserve your intellectual edge
No Data Storage
No storage, ever. Your highlights and definitions are never saved. The only thing we log is usage count for billing.
Real-Time Processing
Instant answers. Definitions are processed in real-time and never written to our servers.
Encrypted Transit
Every request is secured with industry-standard TLS encryption, end-to-end.
Trusted AI Models
We leverage leading AI models to deliver precise, context-aware definitions. Your data is never used for training or stored for reuse.
Our Technical Guarantees
Transparent by design: how your requests are handled, and what will never be stored
How It Works
Only your selection is processed — nothing else
Context is capped at ~300 characters
Encrypted request sent to AI provider
Definition returned instantly, never stored
Minimal Data Retained
Number of definitions requested (for billing)
Whether your subscription is active
Anonymous identifier for account management
What We Never Store
All data transmission is encrypted
All inputs are validated and sanitized
No data persistence or caching
Meets minimal GDPR requirements
Compatible with leading AI providers' security practices