Calculator amounts stay in your browser.

Inputs and results

No account is created. Amounts, holdings, fees and results are calculated in page memory. The application does not transmit them to a server or save them in a database, cookie or local storage. Reloading or closing the page may clear them. A copied report remains in your device's clipboard according to its settings.

Optional ECB lookup

If you request a rate, your browser sends currency codes and a date to our Cloudflare-hosted /api/fx endpoint. It queries the ECB and returns a dated reference. Share quantities, prices, fees, dividends and results are not sent. The request still involves network metadata and may appear in technical logs. Enter a rate manually to avoid this lookup.

Hosting, logs and security

Cloudflare delivers the site and may process IP addresses, requested paths, timestamps, browser and device information, errors and other network data. Operational metrics and logs support delivery, troubleshooting and abuse prevention; they are not a portfolio database. Processing may take place in multiple countries.

Cloudflare Privacy Policy describes the provider's processing; it does not replace this notice.

Advertising and visitor analytics

This version has no AdSense, Google Analytics, Cloudflare Web Analytics beacon or advertising profiles. Sumlucid does not sell calculator inputs. The hosting metrics described above are distinct from a visitor-tracking product. Adding advertising or visitor analytics requires updated notices and, where required, a consent mechanism before activation.

Correspondence and retention

You can email support@sumlucid.com with questions, issues or privacy and copyright requests. Cloudflare Email Routing forwards messages to a Gmail inbox used for support. Cloudflare and Google therefore process sender details, metadata and content needed to deliver and store the message. Correspondence will be kept only as long as needed to handle the request and justified follow-up, then deleted when no longer needed unless legally required. Cloudflare logs follow the provider's configured retention and policies; we do not promise immediate deletion of provider logs.

Your choices and requests

You can use the tools without an account, enter rates manually and avoid sending sensitive information. Depending on applicable law, you may have rights of access, correction, deletion or objection. The Contact and corrections page identifies where to make a request and whether the channel is active. We cannot retrieve a portfolio position that was never transmitted.

Links, children and updates

External sites have their own practices. Sumlucid is not directed specifically to children and does not create child profiles. Material changes to this notice receive a new date and version.