Privacy policy

Privacy Policy

This page explains what HarnDuay processes, how analytics are used, and what users should know about using the site.

Version 1.0Thai / English supportShareable results

Information processed by the app

HarnDuay runs mainly in the browser. Bill data entered into the calculator is used to compute results and create shareable summaries.

Language preference may be stored in the browser to improve return visits.

Analytics and third-party services

HarnDuay uses analytics and performance monitoring to understand traffic and improve reliability.

The site connects to Google AdSense to prepare for advertising. Google may use cookies or similar technologies to serve and measure ads; see policies.google.com/technologies/ads for Google's data practices. HarnDuay does not sell bill details or account profiles because the app does not require accounts.

Share links

When you create a shareable bill summary, the information needed to show that summary may be embedded in the link so friends can view the same totals.

Share summary links only with the people who need them, and avoid entering unnecessary personal information in names or item labels.

Cookies and user choices

Some features may rely on browser storage or cookies for language preference and performance measurement.

Users can clear browser storage or disable cookies, though some convenience features may be reduced.

Google advertising data

Read Google's explanation of how it uses data from sites that use its advertising services and the choices available to users.

Google advertising data policy

Common mistakes

  • Forgetting to separate items some people did not consume, such as desserts, drinks, or add-ons.
  • Splitting VAT and service equally even when food totals differ a lot.
  • Not marking who paid up front, which causes the reimbursement summary to point to the wrong person.

Tips for faster bill splitting

  • Add everyone first, then enter receipt items to reduce backtracking.
  • Use the duplicate action when your receipt has several similar lines.
  • Combine quantity with split weights when one item has uneven portions.

Try it with your real receipt

Add your friends, enter receipt items, adjust VAT or service charge if needed, and share the final summary link instantly.