Privacy Policy

Data controller

• Owner: Lluis Enric Mayans
• Tax ID (NIF): 46955361X
• Address: Avenida Mediterránea 92, CP 07870, Balearic Islands, Spain
• Email: lluismayans83@gmail.com

Data we collect

ROIChecker does not collect personal data from its users. The calculation tools run entirely in the user's browser and do not store any data entered on our own servers.

There is no registration form, private area or purchase process on this site.

Google Analytics

This site uses Google Analytics 4 to measure anonymous usage of the tools. The data collected includes pages visited, session duration and device type, in aggregate form and without identifying individual users.

Google Analytics data is subject to Google's privacy policy. You can disable tracking via the Google Analytics opt-out plugin or by configuring your browser to block third-party cookies.

Your rights

Under the General Data Protection Regulation (GDPR), you can exercise your rights of access, rectification, erasure and data portability by writing to lluismayans83@gmail.com.

Changes to this policy

This policy may be updated to reflect technical or legal changes. The date of the last update appears at the bottom of this page.

Last updated: April 2026