Privacy Policy

Last updated June 20, 2026

Invorest provides free invoicing and accounts-receivable tools, built by the team behind Duefy. We've designed the site to need as little of your data as possible. This page explains, in plain terms, what we do and don't collect.

No account, no tracking cookies

You don't sign up or log in to use any tool, and we don't set advertising or cross-site tracking cookies. There are no third-party trackers or ad networks on the site.

Your tool data stays in your browser

The generators and calculators (invoice, quote, receipt, credit note, statement, timesheet, payment plan, and the calculators) run entirely in your browser. The details you type, the calculations and the exported PDF/CSV are handled locally and are never uploaded to our servers. To make tools convenient, your latest entries may be saved in your browser's local storage (on your device only); the "Reset" button clears that, and so does clearing your browser data.

AI tools

The AI tools (AI contract, quote/SOW, reminder writer, collection-risk predictor and excuse translator) work differently because the text has to be generated for you. When you click "Generate", the details you entered are sent to our server and on to our AI provider (Anthropic) solely to produce your result. We do not store that input or output on our servers afterwards, and it is not used to build profiles or train models. Please avoid pasting sensitive personal data you don't need in the document.

Privacy-friendly analytics

We use our own lightweight, self-hosted analytics to understand which tools are useful — no cookies and no third-party services. We record anonymous events such as page views and whether a tool was used. We do not store your raw IP address or full browser user-agent; only a short, non-reversible hash is kept for rough de-duplication. This data is aggregate and is not used to identify you.

Links to Duefy

Some buttons link out to Duefy and carry a simple source tag (utm_source=invorest) so we can see that the visit came from Invorest. If you go to Duefy, its own privacy policy applies there.

What we never do

We don't sell your data, we don't share it with advertisers, and we don't email you (there's no sign-up to collect an address in the first place).

Changes & contact

If this policy changes we'll update the date above. Questions about privacy can go to the Duefy team via duefy.ai.