Solo operators use 4–6 disconnected tools for clients, invoices, time tracking, and scheduling. Nothing is built specifically for one-person operations.
Solopreneurs and independent consultants use 4–6 disconnected tools: one for client tracking, one for proposals, one for invoices, one for time, one for scheduling, plus email on top. There is no lightweight, integrated tool purpose-built for a solo operator (not a team or enterprise).