Privacy Policy

Querium is a desktop application. It works on your machine and talks directly to your databases. This page lists every case in which it, or this website, sends anything anywhere. If something is not on this page, it is not sent.

What never leaves your machine

• Your queries, results and query history.
• Connection details and passwords. Passwords are kept in your operating system's keychain.
• Your files and settings.

Buying a licence

Payments are processed by Paddle.com, our Merchant of Record, under Paddle's privacy policy. Card and billing details go to Paddle and are never seen by us. From Paddle we receive the transaction id, and we use your email address once, to send you the licence key. We do not store your email address or your name; our activation service keeps only the transaction id and a hashed, encrypted copy of the key.

Activating a licence

Activation sends the licence key, an anonymous machine fingerprint (a hash, not a hardware id) and the machine's name, so you can tell your machines apart. The app renews the licence in the background the same way. Removing the licence from a machine deletes that machine's record.

Usage statistics and crash reports

Off until you say yes, and you can turn it off at any time in Settings. When on, the app sends daily counts of which features were used, the app version and operating system, and crash reports. Never queries, data, table names or connection details. The app can show you the exact report before anything is sent. Each installation is identified by a random id that is discarded when you turn statistics off. No IP addresses are stored.

Update checks

The app checks for new versions by downloading a small file from releases.querium.dev, which is hosted on GitHub. GitHub may log the request like any web request. No information about you is included.

The AI assistant

Optional and off until you set it up. It talks directly to the provider you choose (for example Anthropic, OpenAI or Google), with your own API key, under that provider's privacy policy - not through us. It sends your question and the names and types of relevant tables and columns, and it shows you the full request before the first one is sent. It sends no row data, with one exception you switch on yourself: in agent mode the assistant can ask to run a read-only query, and only when you approve that step are its first 50 rows sent to the provider. Optimising a query also sends the server's estimated plan for it, which holds row-count estimates and no rows.

This website

No analytics and no tracking cookies. The pricing page loads Paddle's checkout script, which may set the cookies Paddle needs to process a payment. Our hosting provider, Cloudflare, processes requests to serve the site.

Your rights

You can ask what we hold about you, ask for it to be corrected or deleted, or ask any question about this policy by writing to support@querium.dev. This includes the rights given by Brazil's LGPD and the EU's GDPR.