Privacy policy

What happens to your requests

When you use an AI tool (generate, explain, fix, convert, macro, regex or highlight rule), the text you type and any column names you add are sent to our server and passed to an AI model hosted by Cloudflare Workers AI to produce the answer. We do not store your requests or the answers in a database. Please do not paste passwords, personal data or confidential figures into the request box.

Clean my data

Files you upload and tables you paste on the Clean my data page are processed entirely in your browser and are never uploaded. If you use "Plan with AI", only the column names and their detected types (for example "date" or "number") are sent, never the values in your rows.

Information stored on our side

• Daily usage counter. To enforce the free daily limit we store a counter keyed by a one-way hash of your IP address and the date. The raw IP address is not stored, and the counter expires after 48 hours.
• Bot protection. We use Cloudflare Turnstile to stop automated abuse. Turnstile may process your IP address and browser signals; see Cloudflare's privacy policy.
• Error logs. When something fails, technical error details are logged for a short time so we can fix bugs. These logs are not used for any other purpose.

Information stored in your browser

We use your browser's local storage to remember your theme (light or dark), your preferred app, Excel version and separator, and your recent formulas. This data stays on your device and is never sent to us. You can remove it by clearing your browser's site data or with the "Clear" button under your recent formulas.

Analytics and cookies

We use Google Analytics, loaded through Google Tag Manager, to understand how many people visit, which pages and tools they use, and roughly where they come from. Google Analytics sets first-party cookies (named _ga and _ga_ followed by an ID) that last up to two years and let it recognise a returning browser. It also collects technical details such as your browser, device type, approximate location derived from your IP address, and the pages you view. We do not send Google the text you type into the tools or any data you clean. Google processes this data under the Google Privacy Policy; you can opt out in any browser with the Google Analytics opt-out add-on, or by blocking or deleting cookies for this site.

We also use Cloudflare Web Analytics, which counts page views and load times without cookies and without identifying you.

Service providers

The site is hosted on Cloudflare, which also runs the AI model, Turnstile and Cloudflare Web Analytics. Google provides Google Analytics and Google Tag Manager. Each processes data on our behalf under its own privacy policy and data processing terms.

Your rights

Because we do not keep accounts or store your requests, there is usually nothing linked to you that we could show, correct or delete. Analytics data is held by Google and kept for the retention period set in our Google Analytics account. If you have a question or a request about your data, email hello@excelformulamaker.com.

Changes

If we change how we handle data, we will update this page and the date at the top.