# QuickBilling โ€” send invoices in minutes; know when they are opened > QuickBilling helps independents send professional invoices fast and track when clients open them. The signed-in product at app.quickbilling.io extends quickbilling.io: full invoice and estimate workspace, customers, billing profiles, expense tracking, templates, Stripe subscription management, and API keys for programmatic access. ## URLs - Product (SPA): https://app.quickbilling.io - Marketing & docs: https://quickbilling.io - API base (proxied on app host): https://app.quickbilling.io/api ## Social - X: https://x.com/quickbilling_ - LinkedIn: https://www.linkedin.com/company/112267279 - Instagram: https://www.instagram.com/quickbilling_/ ## Auth & acquisition (this host) - [Pricing](https://app.quickbilling.io/pricing) - [Sign up](https://app.quickbilling.io/signup) - [Sign in](https://app.quickbilling.io/signin) - [Forgot password](https://app.quickbilling.io/forgot-password) ## Product areas (static app routes; language is chosen in-app, same URLs for en/de/fr/es) - [Overview](https://app.quickbilling.io/overview) - [Invoices](https://app.quickbilling.io/invoices) - [New invoice](https://app.quickbilling.io/invoices/new) - [Customers](https://app.quickbilling.io/customers) - [Billing profiles](https://app.quickbilling.io/profiles) - [Workspace analytics](https://app.quickbilling.io/reports) - [Expenses](https://app.quickbilling.io/expenses) - [Expense categories](https://app.quickbilling.io/expenses/categories) - [Vendors](https://app.quickbilling.io/expenses/vendors) - [Budgets](https://app.quickbilling.io/expenses/budgets) - [Expense reports](https://app.quickbilling.io/expenses/reports) - [Tax](https://app.quickbilling.io/expenses/tax) - [Cost analysis](https://app.quickbilling.io/expenses/costs) - [Financial](https://app.quickbilling.io/financial) - [Templates](https://app.quickbilling.io/templates) - [New template](https://app.quickbilling.io/templates/new) - [Color palettes](https://app.quickbilling.io/palettes) - [Workspace settings](https://app.quickbilling.io/workspace-settings) - [Account settings](https://app.quickbilling.io/settings) - [Subscription & billing](https://app.quickbilling.io/subscription) - [Wishlist / changelog](https://app.quickbilling.io/wishlist) - [Workspaces](https://app.quickbilling.io/workspaces) - [Invitations](https://app.quickbilling.io/invitations) ## Documentation & discovery - [Marketing sitemap](https://quickbilling.io/sitemap.xml) โ€” marketing site + `openapi.yaml` - [App sitemap](https://app.quickbilling.io/sitemap.xml) โ€” indexable acquisition URLs (`/pricing`, `/signup`, `/signin`, `/forgot-password`) - [Marketing llms.txt](https://quickbilling.io/llms.txt) - [OpenAPI](https://app.quickbilling.io/api/openapi.yaml) - [Robots (app)](https://app.quickbilling.io/robots.txt) ยท [Robots (marketing)](https://quickbilling.io/robots.txt) ## Contact - info@quickbilling.io ## Scope `/robots.txt` discourages crawling `/share/`, `/reset-password`, `/verify-email`, and `/accept-invitation`. Token-bearing URLs and invoice share links use `noindex` in `AppSeo`. Signed-in workspace URLs below are for documentation; they redirect anonymous users to sign-in.