Binary Star operates two products in shared orbit — a collectible-card platform and a receipt-first budgeting app — built by the two people who use them daily.
Turn your photos into limited-edition collectible cards — issue, share, and build a collection that's yours alone.
Photograph a receipt and your ledger writes itself. Simple, honest household budgeting without the spreadsheet.
Like a binary star, two independent products orbit one center of mass: an obsession with software people actually keep on their home screen.
2026 · Gunpo, KR
Two products, one studio
Consumer mobile apps