Overview
Polstr is a free Premier League higher-or-lower game. You see a player and a stat line, and call it over or under. We are committed to protecting your privacy and being transparent about how we handle data. This policy explains what information we collect and how we use it.
Information We Collect
Polstr is designed with privacy in mind. We collect minimal data:
- Local Storage: Your scores, streaks, personal best, and preferences are stored locally on your device using browser localStorage. This stays on your device.
- Leaderboard (optional): Only if you choose to submit a score, the nickname you type, that score, and an anonymous random device ID are saved to our leaderboard so your run can be ranked. You can skip submitting and just play.
- No Account Required: We do not require you to sign up or provide any personal information to play. Don't use a real name as your nickname if you'd rather stay anonymous.
- No Cookies: We do not use tracking or advertising cookies.
Third-Party Services
Polstr uses the following third-party services:
- Fantasy Premier League API: We fetch publicly available player data from the official FPL API to power the game. No user data is sent to this service.
- Vercel: Our website is hosted on Vercel. Vercel may collect standard web server logs (IP addresses, browser type, etc.) for security and performance purposes.
- Supabase: We use Supabase to store the football player statistics and market values that power the game, and to host the leaderboard. The only user-provided data stored there is the nickname and score you choose to submit, plus an anonymous device ID.
- Simple Analytics: We use Simple Analytics, a privacy-friendly, cookieless service, to count visits in aggregate. It does not build personal profiles or track you across sites.
Data Storage
Your in-game progress (scores, streaks, and personal best) is stored locally in your browser. Aside from a leaderboard score you choose to submit, this means:
- Your data stays on your device
- Clearing your browser data will reset your game progress
- Your progress won't sync across different devices or browsers
- We cannot access or recover your game statistics
Disclaimer & Data Sources
Polstr is a free, non-commercial fan project. It is not affiliated with, endorsed by, or associated with the Premier League or Fantasy Premier League (FPL). Player statistics are sourced from the official Fantasy Premier League API, and player images and market values from Transfermarkt. All names, images, and trademarks remain the property of their respective owners.
Children's Privacy
Polstr does not knowingly collect any personal information from children. The game is suitable for all ages and does not require any personal data to play.
Changes to This Policy
We may update this privacy policy from time to time. Any changes will be reflected on this page with an updated revision date.
Contact
If you have any questions about this privacy policy or how we handle data, please contact Kristof D Szabo at kristof.domokos.szabo@gmail.com