Privacy
Last updated: 29 October 2026
In short
The numbers you enter into the calculators are processed in your browser and are never sent anywhere unless you choose to save them. If you create an account, only what is needed to sign you in and what you choose to save is stored. No advertising, ad cookies or visitor tracking tools are used.
What data is stored?
| Data | When | Why |
|---|---|---|
| Email address | When you sign in | To identify your account and send sign-in links |
| Name and profile info (from Google) | When you sign in with Google | To show your initial on the account button |
| Chapters you finished | When you tick "I have finished this chapter" | To show your progress on every device |
| Data sets you save | When you press "Save my data" | So you can pick up where you left off |
| Preferences | When you choose a language, quartile or comparison method | To open the site the way you set it |
If you use the site without signing in, progress and preferences stay in your own browser’s storage (localStorage) and never reach us.
Who processes it?
- Supabase: accounts and saved data are stored in Supabase’s database. Each user can only see their own records.
- Google: if you sign in with Google, Google verifies your identity. Ki-kare only receives your name and email address.
- Resend: sends the emails containing sign-in links.
- Cloudflare: delivers and protects traffic to the site.
- Google Fonts: fonts are loaded from Google’s servers.
Data is never sold, never used for advertising and not shared with anyone beyond these services.
How do you delete your data?
The Delete my data button on the Account page immediately deletes your saved data sets, progress and preferences. To have your account (email address) removed completely, write to[email protected]; it will be deleted within a few days.
Your rights
Under Turkey’s Personal Data Protection Law (KVKK, No. 6698) and similar laws, you have the right to learn what data about you is processed and to ask for it to be corrected or deleted. For any question or request:[email protected].