# Vallen

> Supplier quote management over WhatsApp with confirmed proposals, comparable offers, and buyer-controlled decisions.

Supplier quotes over WhatsApp, confirmed proposals, and buyer-controlled decisions.

Primary audience: buyer companies that request and compare supplier quotes over WhatsApp.

Key facts:
- Vallen sends an individual quote invitation only to supplier contacts selected by the buyer.
- Supplier responses are structured without inventing missing facts and require supplier confirmation.
- Only compatible, confirmed offers compete for the lowest-price highlight.
- The buyer explicitly authorizes selections and notices; Vallen does not create purchase orders.

## Core resources
- [Homepage in Portuguese](https://app.vallencompras.com/pt-BR): Primary public page for Brazilian Portuguese visitors.
- [Homepage in English](https://app.vallencompras.com/en-US): Localized public page for English visitors.
- [Sitemap](https://app.vallencompras.com/sitemap.xml): Indexable public URLs and localized alternates.
- [Robots policy](https://app.vallencompras.com/robots.txt): Crawl policy for search engines and answer engines.

## Optional
- [Portuguese privacy policy](https://app.vallencompras.com/pt-BR/privacy): How Vallen handles buyer, supplier, quote, message, proposal, and audit data.
- [Portuguese terms](https://app.vallencompras.com/pt-BR/terms): Product terms for supplier contact, quote organization, AI assistance, and buyer decisions.
- [English privacy policy](https://app.vallencompras.com/en-US/privacy): English privacy policy for Vallen data handling.
- [English terms](https://app.vallencompras.com/en-US/terms): English terms for Vallen product use.