Privacy

Last updated 2026-09-06.

Analysis stays on your device

The number rarity calculator, infinite roller and comparison tools run entirely in your browser. The numbers you analyze are not sent to our servers.

Local storage

Your recent numbers, infinite-roll session, personal best, saved numbers, stop settings, daily streak, Daily Specimen archive and Pattern Atlas field record are stored locally in your browser (localStorage). A random anonymous browser id keeps the same Daily Specimen fixed for that device and UTC day. None of these values identifies a person, and you can clear them at any time from your browser settings. Infinite-mode records do not sync across devices. Starting a new session keeps your personal best and saved numbers.

Daily Specimens and the Pattern Atlas

Daily Specimens are derived and scored in your browser. The resulting number, its date and the patterns it records remain on this device; they are not submitted to a public leaderboard. Clearing site data, switching browsers or using private browsing starts a new local atlas because there is no account to restore it from.

Anonymous analytics

We record anonymous, aggregate usage events (such as "a number was analyzed" or "a share card was created") to understand which features are useful. These events do not include the numbers you enter or any information that identifies you. We do not store raw IP addresses.

No accounts

RNGdle.net does not require sign-up and does not collect names, emails or passwords for its core tools.

Contact

Questions about privacy can be sent via the contact page.