Privacy

Controller and contact

Xiaojun Kong
Yanjiao Qingnianshequerqi
Langfang, Hebei, 065201
China

[email protected]

Local calculations, no tracking

The countdown, storage check and checklist run in your browser. Inputs and checklist selections are not transmitted or saved by this tool. No advertising, cookies or localStorage are used.

Cloudflare Web Analytics

We use Cloudflare Web Analytics for aggregate statistics about visits, traffic sources and performance, without cookies, personal identifiers, cross-site tracking or fingerprinting. Cloudflare, Inc. acts as processor. The legal basis is our legitimate interest in understanding site usage and improving performance (Art. 6(1)(f) GDPR). The only third-party script is this analytics script, loaded from https://static.cloudflareinsights.com/beacon.min.js; fonts and calculation scripts remain local. Measurements are sent to Cloudflare; calculator inputs are not included in these statistics.

Cloudflare technical logs

Cloudflare serves this website and processes IP addresses, request timestamps and user-agent information in technical logs for security, abuse prevention and availability. Visiting is therefore not completely anonymous. Retention follows the applicable Cloudflare service policies; this site does not claim a fixed retention period.

Cloudflare privacy policy · Cloudflare data processing agreement. Processing may occur outside your country, including the USA.

We use technical processing to operate a secure website (legitimate interests where applicable). Emails are used to respond to your request and retained only as needed, including legal requirements. Contact the operator about applicable access, correction, deletion, restriction or objection rights, or complain to your data protection authority. External websites receive information only when you follow their links and apply their own privacy policies.