Privacy policy
ReturnKoto? does not run accounts or logins. The investment amount you type stays in your browser. This page says what we collect, what we do not, and which third parties appear when you leave the site. Last updated 24 July 2026.
Calculator amounts
Stay on your device
Amounts you type into the calculator are processed in your browser to show results. They are not sent to ReturnKoto? as a form submission, not written into public data files, and not included in analytics events.
After you interact with the homepage, the site may keep calculator settings (including the amount) in the URL hash on your device so a refresh or shared link can restore the same view. That hash never leaves your browser as a ReturnKoto? server upload. If you share the full link with someone else, the amount travels with the link you send.
Accounts and identity
None on this site
ReturnKoto? has no user accounts, no passwords, and no profile pages. We do not ask for your name, NID, BO account, phone number or email to use the calculators.
Analytics
Anonymous usage only
To understand what pages and controls people use, ReturnKoto? loads Google Analytics (measurement ID G-9ZHRMVLEEE) and may also use Cloudflare privacy-oriented web analytics on the edge.
These tools collect anonymous, aggregate signals such as page views and coarse interaction events (for example which period chip or door was opened). Event payloads are built so they do not include the investment amount you typed. They are not a login and are not sold to asset managers.
Google and Cloudflare process those signals under their own privacy terms. You can block analytics with browser settings or extensions; the site still works without them.
Settings on your device
localStorage only
The site may store small preferences in your browser’s local storage, for example:
theme (light or dark), rk_path (beginner or expert homepage path), and rk_beta_seen (whether you have already seen the beta notice).
These keys stay on your device. Clearing site data for returnkoto.com removes them.
Third-party destinations
When you leave ReturnKoto?
Some links open services we do not operate. Their privacy rules apply once you leave:
Report a data issue uses a Google Form. A coffee keeps ReturnKoto? running opens SupportKori checkout; ReturnKoto? never sees your card or payment details. Social icons and the community group open Facebook, Instagram, YouTube, TikTok, Reddit or LinkedIn.
Password-gated AMC preview subdomains are for fund-manager review. They are not part of the public calculator experience.
Hosting and public data
What the servers hold
returnkoto.com is a static site served via GitHub Pages and Cloudflare. Public JSON such as data.json and holdings.json contains fund market data, not visitor personal data.
Standard web logs (for example IP addresses seen by the CDN or host) may exist for security and reliability. ReturnKoto? does not build marketing profiles from them.
Children
Not directed at children
ReturnKoto? is an educational tool about financial markets. It is not directed at children, and we do not knowingly collect personal information from children.
Changes
This page can be updated
If the privacy practice changes, we update this page and the date at the top. Continued use after a change means you have seen the new text.
Questions
How to reach us
Privacy questions: email [email protected]. For a wrong figure on a fund page, use the report a data issue form.
Related: About · Terms · Back to the calculator →