What is the best employee scheduling tool for small businesses?

Homebase (free for 1 location) handles scheduling, time tracking, and payroll for hourly teams. When I Work ($2.50/user/mo) scales better for multiple locations. Deputy ($4.50/user/mo) adds demand forecasting and labor compliance. For simple teams under 10, even Google Calendar shared calendars work. The key feature: mobile access so employees can swap shifts and clock in from their phones.