open source · MIT
Don't imagine variants.
Compare them.
One prompt spawns a fleet of agents that each build a different take on your UI. Compare them live on an infinite board, iterate, and pick.
Builds in git worktrees — variants of your real app, not lookalike mockups
Cards are anything — pure HTML, screenshots, videos, GIFs
Iterate from any card — tweak, combine, then pick a winner
Runs on your machine — with the Claude Code subscription you already have
Paste it into Claude Code or Codex — your agent installs everything.