Privacy policy
Last updated October 2026
This policy explains what information CostWise Lab ("we") collects when you use costwiselab.com and how it is used.
Information we collect
- Calculator inputs. Calculations run in your browser. We do not send or store the measurements you enter. Your selected state may be saved in your browser's local storage so you don't have to choose it again.
- Usage data. We use privacy-friendly analytics to count page views and understand which pages are useful. This data is aggregated and does not identify you.
- Email. If you contact us, we keep your message and email address only to reply.
Advertising and cookies
We may show ads served by Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visits to this site and/or other sites on the Internet.
You can opt out of personalized advertising in Google Ads Settings or at aboutads.info. Learn more about how Google uses data from partner sites.
Visitors from the European Economic Area, the United Kingdom and Switzerland will be asked for consent through a Google-certified consent message before personalized ads are shown.
Your rights
U.S. residents (including California under the CCPA/CPRA and other states with privacy laws) may request access to or deletion of personal information and may opt out of the "sale" or "sharing" of personal information for targeted advertising. EEA/UK residents have rights of access, rectification, erasure, restriction, objection and portability under the GDPR. To make a request, email contact@costwiselab.com.
Children
This site is not directed at children under 13, and we do not knowingly collect their personal information.
Changes
We will post any changes to this policy on this page with a new "last updated" date.