Create a group code, share it on WhatsApp, and let everyone add their birthdate. The site computes the group’s next “whole-year-equivalent” milestone and the exact date it happens.
Tip: you can share a link like …/?g=YOURCODE
Alias is required. Max 20 entries per device per group. Cooldown applies.
No login. Demo MVP: dates are stored in Supabase (Row Level Security enabled). Don’t enter sensitive personal data you don’t want to share with the group.