Privacy Policy

Last updated: November 8, 2026

Short version: your numbers never leave your device.

What we collect

• Nothing from the calculators. Every tool computes in your browser. Inputs (salaries, birth dates, addresses-scale quantities) are processed locally and are never transmitted to KitRoost servers.
• Shareable links encode your inputs in the page URL (the part after "?"). A link you share is shared by you, from your device; the server receives only a standard request log line (URL, timestamp, user-agent) like every website.
• Server logs: hosting infrastructure records standard request metadata (IP, user-agent, requested path) for security and abuse prevention. We do not build profiles from logs.
• Local storage: one preference, your theme choice (light/dark), is stored in your browser under kr-theme. Clearing your browser data removes it.
• Analytics: we measure page views so we know which tools people actually use. That runs through Google Analytics (gtag) and Microsoft Clarity. Two safeguards built into the code: the page URL sent to analytics is stripped of everything after "?" (your typed inputs, which live in share links, never reach the analytics provider), and analytics sends no data at all when you open the site from your own computer (localhost). Analytics cookies are set only on the live site; they identify a browser session, not a person, and we do not join them to anything.

Advertising

KitRoost pages are ad-free at launch. If advertising is introduced (to keep the tools free), it will run under the same rules: no behavioral ad targeting from your calculator inputs, the inputs never reach us, so they cannot be targeted. Ad partners (Google AdSense and similar) may use their own cookies under their own policies.

Third parties

We use Cloudflare for hosting and delivery (standard request logs, privacy details at Cloudflare's privacy policy). Fonts are served locally, no Google Fonts requests. Google Analytics and Microsoft Clarity run on the live site as described above, and nothing else: no other third-party cookies, pixels, or scripts.

Kids

KitRoost is a general-audience utility. We collect no personal information from anyone, including children. The family tools (baby sleep, childcare, dog age) are computed on the user's device.

Your choices

Clearing site data in your browser removes the theme preference and the analytics cookies together. Google publishes opt-out add-ons for Analytics, and Clarity's collected data is deletable via its dashboard, requests go through the contact page and we forward them.

Changes

Any material change to this policy gets a dated revision here and a notice on the home page for 30 days. Questions: contact page.