What happens to the numbers you enter
Nothing. Every calculator on this site runs entirely in your browser with plain JavaScript. The values you type — investment amounts, earnings, body measurements, images you preview — are never transmitted to us or anyone else, never stored, and disappear when you close the page. The thumbnail checker reads image files locally with your browser's FileReader; no image data leaves your device.
What we collect
Nothing personal. This site currently has no analytics, no accounts, no forms, no cookies, and no local storage. Our hosting provider (Google Firebase Hosting) keeps standard, short-lived server logs (IP address, requested URL, user agent) as every web host does; we do not use them to identify anyone.
Third parties
- Google Fonts — the two typefaces load from Google's font servers (fonts.googleapis.com / fonts.gstatic.com). Google may log those font requests; no calculator data is included in them.
- Firebase Hosting (Google) — serves the site's files, with the standard server logs above.
That is the complete list. There is currently no advertising on this site. If advertising is added in the future, this policy will be updated first with the networks used, the consent controls, and what they collect.
External links
Tool pages link to sources (official help pages, studies, data providers). Those sites have their own privacy policies; this one stops at our door.
Contact
Questions about this policy: mashxlabz@gmail.com.
Last updated: 29 August 2026 — the date this site launched with 14 tools, no analytics and no ads. This page describes the system as built and changes when the system does.