Critical Number

Sign petitions in confidence. Names only go public when enough people have committed — never before.

Start a campaign

How it works

  1. 1

    Create a campaign

    Set a title, description, signature threshold, and deadline. Only people you invite can sign.

  2. 2

    Invite signers privately

    Each person receives a unique single-use link. No one can join without an invite.

  3. 3

    Signatures stay secret

    While the campaign is active, only the count is public. Not even you can see who has signed.

  4. 4

    Reveal — or delete

    If the threshold is reached before the deadline, all names go public simultaneously. If not, every signature is permanently deleted.