Device-based authentication
Each install uses a device token stored in Keychain, without creating an email/password account.
Features that keep sleep journaling practical
SleepLedger focuses on subjective sleep tracking: short inputs, durable history, and clear summaries.
Structured nightly prompts
Track quality, rested feeling, and next-day energy with optional note text and voice attachment.
Apple-backed purchase verification
Pro access is verified server-side with StoreKit 2 signed transactions and certificate checks.
Clinician-ready exports
Generate export files from Pro endpoints for concise review during appointments.