Whisker: Pet Health

Track vaccines, medications, weight and lab results for every pet — without an account, without the cloud. Encrypted on your iPhone, ready when the vet asks.

Whisker is a private, local-first health record for the pets you love. No accounts, no cloud, no ads — every entry stays encrypted on your iPhone, and you decide if and when to share it.

WHAT YOU CAN TRACK • Pet profiles — species, breed, birth date, microchip, allergies, chronic conditions • Vaccines & deworming with next-due reminders • Medications and dosing schedules • Weight, feeding and excretion logs • Vet visits, grooming, nail trims and custom events • Lab values (ALT, BUN, CREA, T4 and more) extracted automatically from scanned reports

WHY LOCAL-FIRST Your pet's medical history is sensitive. Whisker stores everything inside the iOS sandbox using a 256-bit encrypted database. There is no Whisker server. We cannot read your data — because we never receive it.

ON-DEVICE INTELLIGENCE • Apple Vision OCR turns paper lab reports and prescriptions into structured data, on your phone • Apple Health integration pulls your daily steps so you can correlate exercise with your dog's weight curve • Apple Foundation Models (iOS 26+) extract lab values from messy or handwritten reports — fully on-device

PREMIUM Whisker Premium unlocks: • Unlimited pets • Insurance-grade PDF reports for vet visits and claims • Apple Health integration • 6 themes (warm cream, midnight, forest, ocean, rose, mono) • 12-word encrypted backup (BIP39 seed phrase) for restore-on-new-phone

Premium options: • Monthly subscription • Annual subscription (best value, with optional free trial) • Lifetime — one-time purchase, never expires

PRIVACY • No account required, ever • No analytics, no telemetry, no third-party SDKs that phone home • Camera + Vision OCR runs entirely on your device • Apple Health integration is read-only and on-device • Backups are encrypted with a key only you hold (your 12-word phrase) • Family sharing (when enabled) uses Apple's MultipeerConnectivity — peer-to-peer over local Wi-Fi, never through our servers

WHO IT'S FOR • Multi-pet households who can't keep paper records straight • People who change vets and need a portable medical history • Anyone who values privacy enough to host their own data

Whisker stays useful even with no internet — at the vet's office, in the car, on a hike. Your records belong to you.

terms of use: https://guoyongqing.github.io/whisker-docs/terms_of_use.html