echo.|| — Frequency Wellness App

echo.|| (echo11) is a frequency/binaural-beats wellness app — a React SPA (JSX transformed in-browser via Babel, no build step) that plays focus, sleep, healing, and abundance audio frequencies, with Supabase for auth and entitlements.

Live at echo11.space.

Running locally

There is no build step — the app loads React, ReactDOM, and Babel from CDN and transforms JSX in the browser. Serve the repo root with any static file server and open /echo11-app.html (routing matches vercel.json):

npx serve .

Project structure

• echo11-app.html — app entry point, loads modules from project/ in order
• project/echo-*.jsx — app screens/components (data, UI, home, player, paywall, settings, Supabase integration)
• project/echo-*.css — styles
• project/echo-config.js — Supabase URL/anon key (see project/SUPABASE_SETUP.md)
• project/img/, project/media/ — image and audio assets
• project/legal/ — privacy, terms, disclaimer pages (routed via vercel.json)
• project/supabase/ — database schema
• vercel.json — routing for the deployed site

Deployment

Deployed on Vercel. vercel.json routes / to echo11-app.html and the legal pages to project/legal/.

Search & analytics (open beta, since Oct 2026): the app is public and indexable — robots.txt allows all and points to sitemap.xml; index.html carries a canonical (https://www.echo11.space/) and WebApplication JSON-LD. The legal pages and the legacy echo11-app.html keep noindex. Analytics use the same GA4 property as echo11.app (G-TP9YRD6TN8) with Consent Mode (cookies off until the in-app "Accept"); app events are frequency_start and frequency_complete with source: "app".

CSS

The stylesheets the page loads (echo11-app.css, echo11-web.css) are minified. Edit the readable copies in src/, then regenerate (no build step, no dependency added to the app):

sh scripts/minify-css.sh

That runs csso-cli 5.0.5 with restructuring on, and writes the files the page already links. After regenerating, look at Home, the category cards, and the player on a phone-width window and on desktop.

Background

This repo originated as a design handoff from Claude Design (claude.ai/design) — see chats/ for the original design conversations if you need context on past design decisions.