Sign up at retool.com (free for up to 5 users) and connect your database — Retool supports Postgres, MySQL, MongoDB, Google Sheets, Airtable, REST APIs, and 50+ more. This is the foundation. If your data lives in a spreadsheet, you can still connect it and build a real dashboard on top.

Retool gives you pre-built components: tables, forms, charts, buttons, modals, file uploads, text inputs. Drag them onto the canvas and connect them to your data with simple queries. Building a CRUD admin panel takes about 30 minutes once you understand the basics. Their getting-started docs are excellent.

Each component can trigger queries — SQL, REST API calls, or JavaScript transformers. Click a row in a table → populate a detail panel. Click a button → update the database. The query builder has autocomplete and lets you reference other components with {{ }} syntax. It feels like a spreadsheet formula once you get used to it.

Set permissions (viewer, editor, admin) and share the app URL with your team. Retool handles hosting, auth, and audit logs. For more complex needs, add Retool Workflows (their automation layer) to run scheduled tasks or trigger actions from external events. The free plan covers most small teams.