This privacy policy covers gradecat.com. GradeCat has no accounts and no ads, and it uses no advertising cookies. Your grades are stored in your browser, and we never receive them.
Your grades
The tools run in your browser. What you type is saved there, so it is still there when you come back. It is not sent to us.
If you email us, we receive what you send. Please leave out names and student data.
Share links
Copy link puts your data into the link itself, in the part of the URL after the #. Browsers do not send that part to servers when they ask for a page.
The link is the data, though. It is compressed, not encrypted. Anyone you send it to can read it, and so can any app you send it through. Share it the way you would share the grades themselves.
A class link from the Weighted Grade Calculator holds the class setup and no scores. The Plan my final button also uses the part after the #, to carry your current grade to the Final Grade Calculator.
Hosting and server logs
GradeCat runs on a web hosting server that keeps normal server logs. Logs like these usually hold your IP address, your browser type, the page you asked for and the time. They do not hold what you type into a tool, because that stays in your browser.
When a GradeCat link is pasted into an app such as WhatsApp or LinkedIn, the app fetches our preview picture. We count how many times each app does that each day, and nothing more: not who shared the link, and not where.
Visitor statistics
We count visits with Matomo, which runs on our own server, so what it records stays with us. For each visit it records the page address, the site or search engine you came from, your country, your browser and device type, how long you stayed, which tool buttons you pressed (such as Copy link or Print), whether you started using a tool (never what you typed), how far you read a guide, how fast the page loaded, which app, AI assistant or tagged link sent you (an app is named from your browser type when a link opened inside it), the address you tried if a page was missing, and any script error your browser hit. Your IP address is shortened before it is stored, so it cannot point to you.
It never records the part of the address after the #, where share links carry grades, and it never sees what you type into a tool. If your browser sends Do Not Track, Matomo records nothing.
To tell new visits from returning ones, Matomo sets two first-party cookies: _pk_id, a random visitor
number kept for 13 months, and _pk_ses, kept for 30 minutes. They are not used for ads and not
shared. Clearing site data, as described below, removes them.
Google Analytics
We also use Google Analytics 4, a service from Google, to see how people find and use the site. It receives the page address, the site you came from, your browser and device type, an approximate location, how long you stayed, which tool buttons you pressed, and the same counts Matomo gets: tool use, guide reading, page speed, AI assistant visits and missing pages. Google says Google Analytics 4 does not log or store IP addresses.
Like Matomo, it never gets the part of the address after the #, it never sees what you type into a tool, and it does not load at all if your browser sends Do Not Track. We turned off Google signals and ad personalization for this site.
It sets first-party cookies named _ga and _ga_ followed by our ID, which Google lists
as kept for
2 years. Google explains
how it uses data from sites that use its services.
Clearing site data removes these cookies too.
Page counts
We may use Cloudflare Web Analytics to count page views. It is cookieless. Cloudflare says its script stores nothing in your browser and discards your IP address rather than storing it.
If it is on, a small script from Cloudflare reports the page address and load times. Cloudflare says it does not log query strings. Pages opened from a link with data after the # do not load this script at all, so a share link stays out of that report.
What is stored on your device, and how to clear it
GradeCat uses your browser's localStorage. All our entries start with gc:v1:. They hold:
- Your light or dark theme choice.
- What you entered in each tool, and that tool's settings.
- Any grading scales you saved.
- The country whose rules you picked, as a two-letter code such as PK. Visitor statistics count only that code and whether it came from a suggestion.
When Plan my final carries your grade to the Final Grade Calculator, the grade waits in the browser's
sessionStorage, also under gc:v1:, until you edit it there. Closing the tab clears it.
To clear them, open your browser's settings, find site data (it is often listed with cookies), and delete the data for gradecat.com. We hold no copy, so we cannot bring it back. To keep a copy of your GPA data, use Back up in the GPA Calculator first.
On a shared computer, the next person using the same browser can see what you saved. Use a private window there, or clear the site data when you finish.
Links to other sites
Our pages link to schools, state laws and other sources. Those sites have their own privacy policies.
Children
GradeCat is not directed at children under 13.
Changes to this policy
If this policy changes, we will update this page and the date below.
Contact
Questions about this policy? Write to admin@gradecat.com.
Last updated 2026-11-04