Privacy Policy

Effective October 20, 2026

Fantasy Score Predictor is a browser extension that adds projections and roster advice to ESPN Fantasy Football pages. It has no server, no accounts, no analytics and no ads. The developer receives no data from you at all.

What the extension reads

ESPN Fantasy Football pages you open (fantasy.espn.com/football/…), to find the players shown and draw projections next to them.
Your league data from ESPN's fantasy API: scoring settings, rosters, matchups and player stats. These requests go from your browser directly to ESPN and use your existing ESPN login, exactly as ESPN's own site does. The extension never sees or stores your ESPN password.
Your ESPN user ID (the SWID cookie), read on your device only to tell which team in your league is yours. It is never stored or sent anywhere.

What it stores, and where

Only in your own browser:

Your settings (stored with chrome.storage.sync, so Chrome may sync them between your own signed-in browsers).
The panel's position and whether it's open.
Cached public sports data (schedules, stats, betting odds, weather) to avoid downloading it again. Odds and weather older than a week are deleted automatically.

Your league, roster and team data are kept in memory only while the page is open and are not saved.

What it sends, and to whom

The extension only makes read-only requests. Apart from ESPN (see above), it requests public data from these services, and the requests contain no information about you or your league (only things like the season, week, game or stadium location):

Service	Purpose
This project's website (`fantasy-score-predictor.vercel.app`)	The latest weekly retrained model (a file of numbers, at most twice a day)
ESPN (`cdn.espn.com`, `site.api.espn.com`, `sports.core.api.espn.com`)	NFL schedule, live scores, Vegas lines
Sleeper (`api.sleeper.app`)	Public projections and weekly stats
Open-Meteo (`api.open-meteo.com`)	Stadium weather forecasts
Kalshi (`api.elections.kalshi.com`)	Public anytime-touchdown market prices
FantasyPros (`www.fantasypros.com`)	Public expert rankings, only if you turn this on in the panel's settings

Like any website request, these services can see your IP address and browser type. Their own privacy policies apply to that.

What it does not do

No selling, sharing or transferring of user data to anyone.
No use of data for advertising, credit or lending decisions.
No tracking, analytics or remote code.

This website

This site uses no cookies, analytics or third-party scripts. Its host may keep standard server logs (such as IP addresses) for security and operations.

Removing your data

Uninstalling the extension deletes everything it stored. To clear it without uninstalling, remove the extension's site data in Chrome's settings.

Changes and questions

If this policy changes, the new version will be published at this address with a new effective date. For questions or problems, use the Support tab on the extension's Chrome Web Store page.