what is tradingview-gratis fr?

TradingView Gratis is an open-source, free alternative to TradingView Pro built for cryptocurrency chart analysis, targeted specifically at users in Latin America (LATAM). It replicates the look and feel of TradingView using the same charting library TradingView itself uses, called lightweight-charts, but without any cost, login requirement, or ads. The tool connects to Binance's public data feeds (no API key needed) via a WebSocket connection, WebSocket is a way to receive data continuously in real time, to display live candlestick charts for any crypto trading pair available on Binance. You can switch between multiple time intervals (1 minute through 1 week), toggle on common technical indicators like EMA, RSI, and MACD (mathematical overlays traders use to spot trends), and track multiple symbols in a watchlist with live price updates. Your preferences for symbol, timeframe, and indicators are saved in your browser automatically. All the indicator calculations happen in the browser itself, not on a server, so there is no backend to maintain. The project is entirely client-side and can be deployed for free to services like Vercel or Cloudflare. This project is also the foundation of a video tutorial series covering progressively more advanced features. The README notes it does not yet include drawing tools like trend lines, server-side alerts, or live trading functionality. The tech stack is TypeScript with Next.js as the web framework, Tailwind CSS for styling, and Zustand for managing app state.