Why most private tennis coaches end up with five tools and none of them fit
A private tennis coach is, on paper, running a very small business. In practice they are running thirty small relationships in parallel, between courts, in car parks, on a phone that is almost out of battery.
The stack arrives slowly. A calendar for the week. WhatsApp for the parents. A notes app for what you covered. A spreadsheet for who has paid. A second spreadsheet, somewhere, for the block packages that nobody can quite remember the balance of. None of it is wrong. It just stops fitting at about the point you cross twenty regular clients.
The moment it stops fitting is almost never dramatic. It is a parent asking how the forehand has been progressing and you not being able to assemble an honest answer in the thirty seconds you have before the next session walks on. It is a junior who quietly drifts because nobody noticed they had not booked in three weeks. It is the Sunday evening half hour spent reconciling who paid for what.
A simple client system is the thing that catches all of that before it becomes a problem. Not a CRM in the sales sense. A client system in the coaching sense.