Privacy policy & disclaimer

Updated 2026-10-06 · Advertising cookies and user choices updated

wontools (the Site) provides free calculation tools for investors in Korean stocks. This policy explains how the Site handles personal information and the nature and limitations of its information.

1. Personal information collected

Calculations on this Site are processed in your browser. Save this calculation stores up to 20 sets of inputs, displayed results and timestamps in this browser's localStorage. Delete individual entries in Saved, or clear browser site data. No cross-device sync, registration or login is provided.

Shared URLs contain your inputs and linked dividend details. Anyone receiving the URL can see them. Query parameters may be sent to the hosting server when the page loads. Review the contents before sharing.

If email features such as dividend alerts are introduced, collection fields, purpose, retention, cancellation and deletion will be disclosed separately. Email addresses will be collected only after consent.

2. Cookies and analytics

Usage analytics (Google Analytics 4): To improve the service, page paths, referrers, device/browser information and cookie-based identifiers are sent to and processed by Google. This data is sent to Google, a third party. Names, contact details and other directly identifying information are not collected. Calculator inputs are not included in analytics. Google's privacy policy governs its data processing.
Advertising (Google AdSense): This site uses Google AdSense code. Ad serving depends on approval status and advertising settings.
Third-party vendors, including Google, may use cookies to serve ads based on prior visits to this or other websites. Google advertising cookies enable Google and its partners to serve ads based on those visits.
Personalized ad settings let you turn off personalized Google ads. For cookie-based personalized advertising from other participating vendors, visit WebChoices to manage your choices.
How Google uses data · Google Privacy Policy
You can reject or delete cookies in your browser settings. Some analytics may be unavailable, but the calculators will still work.

3. Data sources

Calculators perform arithmetic on your inputs. Korean stock search and dividend schedules provide reference data from public sources; filings and corrections after the displayed data date may be missing. Prices are not live. Sources are listed below.

Public Data Portal — FSC stock price data
Financial Supervisory Service — DART

Saved or shared dividend inputs are not automatically replaced with current values. Where possible, a comparison with available data is shown. This does not replace checking original filings.

4. Disclaimer

All calculations, figures and content on this Site are reference informationand are not investment advice or trading recommendations. No stock purchases, sales, target prices or timing are suggested.
Tax-related calculations are estimatesand may differ from actual tax filing or payment results. Confirm exact tax amounts with the National Tax Service's Hometax or a tax professional.
Accuracy, completeness and timeliness are not guaranteed. You are responsible for investment decisions based on this information and their outcomes.

5. Contact

For questions about this policy or the data, contact us below.

Email: [email protected]

6. Revisions

This policy may change with laws or services. The date on this page will be updated when revised.