# Furrquency > Sound frequency therapy for dogs and cats. A research-backed Web Audio engine that plays gentle tones, guided sessions, and daily routines to help pets relax, focus, and rest. Furrquency is a browser-based sound therapy tool for pet parents. It mixes calibrated frequencies (Solfeggio tones, sub-bass grounding, gamma-range cognitive support, purr-range comfort) live in the browser using the Web Audio API. Every tone in the library is tied to peer-reviewed animal-audiology research; speculative claims are clearly labelled as exploratory. ## Pages - [Home](/): Overview, featured tones, and the research behind the project. - [Sound Library](/library): Full catalog of 24 frequencies for dogs and cats. Layer tones to build a custom session. - [Guided Sessions](/protocols): Multi-step audio protocols for thunderstorms, vet visits, separation anxiety, senior cognitive support, and more. - [Daily Routines](/scheduler): Schedule recurring sessions with browser notification reminders. - [Pet Dashboard](/dashboard): Track pets, log sessions, and watch progress over time. - [Knowledge Base](/knowledge): Plain-language reading on canine and feline audiology, the Solfeggio scale, vagus nerve activation, and session design. ## Optional - [Lovable preview](https://furrquency.lovable.app): Latest preview build of the app.