NUMEX is a free, browser-based daily number puzzle. This policy explains what NUMEX processes when you play. We keep it minimal — there are no player accounts and no sign-up is required.
Anonymous player identifier
When you first play, your browser generates a random anonymous identifier and stores it in your browser's local storage. It is not linked to your name, email, or any real-world identity. It exists only so your daily progress and statistics can be saved and restored on your device.
Game progress & statistics
We store your progress for the current day's puzzle (the guesses you submit and the resulting feedback), and aggregate statistics tied to your anonymous identifier: games played, win percentage, current and best streaks, and your guess distribution. This lets the game restore your board after a refresh and show your stats. Your guesses are validated on our server, which is why this information is stored server-side against your anonymous id.
Browser (local) storage
NUMEX uses your browser's local storage to remember your anonymous identifier and whether you have seen the "How to Play" intro. Clearing your browser storage will reset your local identity and starts you as a new anonymous player.
Timezone
Your browser's timezone is sent with requests solely to determine which day's puzzle is active for you (NUMEX follows your local calendar day). It is used to serve the correct puzzle and is not used to identify you.
Analytics & cookies
We use privacy-conscious product analytics (PostHog) to understand general usage and improve NUMEX. This may set cookies or use local storage and may record anonymised usage interactions. We do not sell your data. Aside from analytics, NUMEX does not use advertising or tracking cookies.
What we do NOT collect
No accounts, no passwords, no email addresses (unless you choose to email us), no payment information, and no advertising profiles.
Data retention
Progress and statistics remain associated with your anonymous identifier so the game keeps working across visits. You can effectively remove your local identity at any time by clearing your browser storage.
Children
NUMEX is a general-audience puzzle and does not knowingly collect personal information from children.
Contact
Questions about privacy? Email hello@playnumex.com.