Client management and CRM
Project and client management built for service businesses generally, not coaches specifically.
Side by side
What this category does not do
Tools in adjacent categories are not substitutes. If you are choosing from this list, work out first whether the job you need doing actually lives here, because the most common and most expensive mistake is buying a category rather than a capability.
A coach running one-to-one programmes with payments, scheduling and a community generally needs either one system that covers all of it or three or four that each cover part. Comparing a scheduling tool against a course platform is comparing two parts of the same stack.