1. Who operates OLCalc?
OLCalc ( https://olcalc.com/ ) is an independent website providing online calculators and related educational content. For privacy questions, contact wangzhifeng.wzf@gmail.com.
2. Information you provide
If you email us or contact us through a form, we may receive information you choose to send, such as your name, email address, message, and details of a tool issue. We use this information to respond, investigate reports, and maintain the website. Please do not send passwords, payment information, or other sensitive information.
The sample contact form opens an email draft in your device's email application; it does not itself transmit or store the message. If a server-side form or third-party form service is added, this statement must be updated.
3. Calculator inputs and files
How calculator inputs are handled depends on each tool's implementation. Document whether entered expressions, uploaded files, or results are processed only in your browser or sent to a server or third-party service. Do not claim data stays on your device unless you have verified that behavior.
4. Server logs and security
Hosting, content delivery, and security providers may process technical information such as IP address, browser and device details, requested URLs, referring page, timestamps, and error logs to deliver pages, diagnose errors, protect the service, and prevent abuse, subject to provider configurations and policies.
5. Cookies, analytics, and similar technologies
OLCalc may use technologies required for site operation or security. If analytics or other measurement tools are enabled, providers may use cookies or similar technologies to collect usage information. Identify the specific providers and purposes here once selected.
6. Advertising and Google AdSense
If OLCalc uses Google AdSense or other third-party advertising services, those services may use cookies, web beacons, IP addresses, or similar technologies to serve, measure, limit, or personalize ads, subject to applicable provider settings and policies. Third-party vendors may process information about visits to this and other websites.
Learn more through Google's advertising technologies information and Google Ads Settings. Configure consent-management and disclosure requirements applicable to your audience and implementation.
7. How information is used
Depending on the information and services involved, information may be used to operate and secure the website, respond to inquiries, improve tools and content, understand aggregate usage, prevent abuse, comply with legal obligations, and display or measure advertising where enabled.
8. Sharing and service providers
Information may be processed by hosting, security, analytics, email, or advertising providers when needed to operate the site. Information may also be disclosed where required by law or necessary to protect rights, users, and the service. Replace this general wording with details of providers actually used.
9. Data retention and security
We retain inquiries and related records only for as long as reasonably needed to respond, maintain records, resolve disputes, or meet legal obligations. We use reasonable measures to protect information, but no internet transmission or storage system can be guaranteed completely secure.
10. Your privacy choices and rights
Depending on your location and applicable law, you may have rights to request access, correction, deletion, restriction, or other handling of personal information. To make a request, email wangzhifeng.wzf@gmail.com. We may need to verify your request before acting.
11. Children's privacy
OLCalc is intended for a general audience and is not knowingly designed to collect personal information from children in violation of applicable law. If you believe a child has provided personal information improperly, contact us.
12. International visitors
Depending on hosting and service providers, information may be processed in countries other than the country where you live. Where required, appropriate safeguards should be used for international transfers.
13. Third-party links
Pages on OLCalc may link to third-party websites. We do not control their content or privacy practices. Review their privacy policies before providing information.
14. Changes to this policy
We may update this policy when the website, services, or legal requirements change. The effective date at the top indicates when this page was most recently reviewed.
15. Contact
For privacy questions or requests, email wangzhifeng.wzf@gmail.com.