Last updated: 2026-06-16
Summary
FounderCalc's calculators (Stripe fees, MRR, LTV/CAC, runway, profit margin, freelance rates, and more) run entirely in your browser. Numbers or data you enter into a calculator are processed locally using JavaScript and are never transmitted to, or stored on, our servers.
This page explains what limited information our web server and any advertising partners may collect when you visit the site.
Server logs
Like virtually all websites, our web server automatically records standard technical information for each request, including:
- The page requested and the time of the request
- Your browser's user agent string
- A truncated/anonymized form of your IP address
- The referring page, if any
These logs are used solely to understand aggregate traffic (e.g. which tools are popular, whether the site is working correctly) and to detect abuse. They are not linked to any account, because no accounts exist, and are periodically deleted.
Cookies and advertising
If display advertising is enabled on this site, our advertising partner (Google AdSense) and its partners may use cookies or similar technologies to serve ads based on your visits to this and other websites. You can learn more about how Google uses data and control your ad personalization settings at Google's Ads Settings and How Google uses information from sites that use its services.
If you are in a jurisdiction that requires it, a cookie consent banner will be shown before any non-essential cookies are set.
Data you enter into tools
Every calculator on FounderCalc processes your input locally in your browser. Nothing you type into a calculator is sent to FounderCalc's servers, stored, or shared with any third party.
Third-party links
Some pages may link to external resources for further reading. FounderCalc is not responsible for the privacy practices of external sites.
Changes to this policy
This policy may be updated from time to time. The "last updated" date at the top of this page reflects the most recent change.
Contact
Questions about this policy can be sent via the contact page.