Group Birthday
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.
Definition: 1 year = 365.2425 days
Create / open a group
Tip: you can share a link like …/?g=YOURCODE
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Add a birthdate
Alias is required. Max 20 entries per device per group. Cooldown applies.
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Participants
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Result
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On that date…
Share
Share image
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.