STACX is the creator business manager built for how you actually work. Track brand deals from pitch to payment, manage deliverables, calculate your rates, generate professional invoices, and get AI-aided brand pitches (driven by data of what works) — all in one place, all offline-ready. No more spreadsheets. No more chasing payments blind. No more undercharging. Free plan supports 10 active deals. Pro unlocks unlimited. Multi-currency support for creators worldwide.