Privacy policy
What is not collected
Grade Index itself has nothing that follows who you are — it only counts how often each page is read. The Google ads shown to free visitors, however, use cookies and similar technology run by Google (see “Advertising” below).
Unless you sign in, the only thing that reaches these servers is the one line described under “Sent automatically” below. Favorites and display settings stay on your own device.
What is kept when you sign in
Signing in is through Google only. No passwords are handled. What comes back from Google is just two things — an ID that tells accounts apart, and an email address; no name, no picture.
Alongside that, your favorite players and teams, the pages you looked at recently and your display settings are stored, so that signing in on another device shows you the same things.
Signing out also clears what is stored on that device. To remove the account itself, use “Delete account” on My page: everything we hold is deleted, and it cannot be undone. Any paid plan is canceled. Payment records stay with Link, the seller.
Cookies
We set a cookie only for signed-in visitors, to keep you signed in. We use no analytics cookies. Advertising cookies are used by Google (see “Advertising” below).
Requests to other companies
We run no social buttons or third-party fonts that would send traffic elsewhere. There are four exceptions, of two kinds.
Sent automatically
When a page opens, we record which pages are being read with Cloudflare (web analytics). It sets no cookies and does not follow who you are — it only counts.
For free visitors, ads from Google are loaded when a page opens (see “Advertising” below).
Only when you arrive through the link on our Instagram profile, we also keep one line on our own server: the time, language, country, device type (phone or desktop) and whether it opened inside an app. No IP address, and nothing that could identify you.
Only when you press
Pressing sign in takes you to Google, and subscribing or managing a paid plan takes you to Stripe.
Advertisement
This site shows ads through Google AdSense. Paid plans see no ads.
Third-party vendors, including Google, use cookies to serve ads based on your visits to this site and other sites. How Google uses this information is explained on Google’s page.
You can turn off personalised ads in Google’s Ads Settings. Cookies from other vendors can be turned off at aboutads.info.
Visitors from the EEA, the UK and Switzerland are asked first whether cookies may be used for advertising (Google’s consent message).
Where it goes and what is sent
Recipient: Google LLC
What is sent: the address of the page you are reading, information about your device and browser, your IP address, and identifiers such as cookies
Purpose: choosing and showing ads, counting how often they are shown and clicked, and detecting invalid traffic
Payments
Payments for the paid plans are handled by Stripe. Card numbers never pass through this site — they are entered on Stripe's own page, and this site neither receives nor stores them.
What is stored here is only the customer id issued by Stripe and the state of your subscription — which plan, and whether it is active.
The sale and the payment are handled by Link, LLC, Stripe's merchant of record. Receipts, invoices and cancellation notices come from Link, and you can also manage the subscription on Link's own pages.
How this site is served
This site is served through Cloudflare. In the course of delivering pages, ordinary access records such as the requesting IP address arise on their side. Those exist for delivery and security, and are never used here to identify anyone.
Your rights
You may ask to see, correct or delete what is held about you. You can also delete it yourself with “Delete account” on My page. This applies wherever you live.
What is kept is held for as long as the account exists, and deleted the moment the account is. It is stored on Cloudflare infrastructure, which is not necessarily in Japan.
Changes to this notice
If the recipients or what is sent change, this notice will be rewritten before the change.
Contact
contact@grade-index.com
Established 18 September 2026; revised 5 October 2026