What this does, and what it deliberately does not
You describe the estate and the family. The page then applies the succession rules of the Turkish Civil Code to what you entered and shows who inherits, in what fraction, with the article each number comes from — the surviving spouse under Article 499, the children and their representation under Article 495, the parents’ branch under Article 496, and the reserved shares under Article 506 where there is a will. Dates are built from the day you say you learned of the death, because that is when the three-month window in Article 606 starts running, not the date of death itself.
It stops where honesty requires. The grandparents’ branch is answered at branch level rather than per person, because Article 497 moves a predeceased grandparent’s share between the two sides in ways we would rather check than guess. And three things sit outside any form: the matrimonial property claim a surviving spouse may have before the estate is divided at all, lifetime gifts that can be pulled back, and whether a will is valid. Each of those can change the answer, so the result says so plainly instead of hiding it in small print.
Nothing you enter is transmitted. The whole calculation runs inside your browser; there is no request to any server, and the summary only travels if you copy it yourself. Given that the questions ask who died and who survives, that seemed the only defensible way to build it.
For the full explanation of Turkish succession — certificates of inheritance, cross-border wills, the tax, the disputes — see the inheritance service page.