Privacy and legal notice

Last updated: November 2026.

Site author

Mansa Souleymane Berthe. Contact: bmansasouleymane@gmail.com.

What stays with you

Your progress, settings and programs are saved in your browser's local storage. They never leave your device. To erase them, delete this site's data in your browser.

What the site does not do

No account, no advertising, no audience tracking, no cookies set by the site.

Technical services

The host may log the normal technical data of a visit, such as the IP address and the page requested. Fonts are loaded from Google Fonts, which therefore receives your IP address when they load.

If you write to me

Your message and address are used only to reply to you and to improve the tools. They are neither sold nor passed on. You can ask for them to be deleted at the same address.

Use of the content

These tools are for training. Values are indicative and simplified. The manufacturer's manual and the site's safety rules always take precedence. No real maintenance or production decision should rest on them alone.