Privacy Policy
This policy explains what Halvle collects, why it is collected, and the choices available to players.
Information We Collect
You can play Halvle without an account. If you sign in, Supabase Auth stores your email address, account identifier, authentication session, and related security metadata. Halvle stores saved daily results, scores, split percentages, completion times, streaks, and badge awards.
The game also uses browser local storage for guest results, practice progress, anonymous player and presence keys, cookie choices, and account session persistence. Completed daily games are saved with the anonymous player key so score comparisons and aggregate player counts work even when a player does not sign in. Presence heartbeats update a recent-visitor count for the admin dashboard without storing account emails.
Analytics And Advertising
Halvle uses Vercel Analytics to understand aggregate site usage. GateKeeper/Ezoic provides the consent banner. If you allow advertising cookies, Google AdSense may use cookies or similar technologies to serve ads and measure performance. Google and other ad vendors may use prior visits to this or other sites to personalize ads where permitted.
You can decline advertising cookies in the cookie banner or change your choice later from the footer. You can also manage Google ad personalization in Google's ad settings.
How We Use Information
We use this information to provide account sign-in, sync scores across devices, calculate streaks and badges, show daily score comparisons, protect the service, measure aggregate performance, and display ads when you have allowed advertising cookies.
Sharing
We use service providers including Supabase for authentication and database storage, Vercel for hosting and analytics, GateKeeper/Ezoic for consent management, and Google for advertising. We do not sell account emails or saved scores.
Children
Halvle accounts are not intended for children under 13. Do not create an account if you are under 13. If you believe a child has provided personal information, contact us so we can delete it.
Your Choices
You can play without signing in, decline advertising cookies, clear local browser storage, or request deletion of account data by emailing privacy@halvle.com from the email address connected to the account.