Florian Groß manages his tennis school in the Munich area with several coaches, seasonal locations, up to 20 groups, and over 140 clients. He knows exactly what that meant for monthly billing.

Anyone who runs a tennis school thinks about tennis—about technique, tactics, and player development. However, a significant portion of the work takes place elsewhere: in spreadsheets, calendars, messages—and in manual billing tasks that repeat month after month. For Florian Groß, owner and head coach of the Groß Tennis School, this was long the real burden behind running the business.

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Groß Tennis School — At a Glance

• Owner & Head Coach: Florian Groß 
• Locations: Oberschleißheim Sports Center (summer & winter), TC Schwabing Munich (summer), TeG Neuherberg 
• Services: Group and individual training, tennis fundamentals, mental training, competition coaching, video analysis, training camps 
• Target Groups: Children, teens, and adults—from beginners to tournament players 
• Planubo Features Used: Calendar & Team Calendar, Booking Page, Billing Tool, Messages & Announcements, Analytics & Team Performance

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The biggest time sink: Group assignments and daily billing

Florian Groß founded the Groß Tennis School in the Munich area and operates it seasonally at two locations. Behind the scenes, this used to mean spending a lot of time on group assignments in Excel, booking lessons, and tracking billing via smartphone notes—along with a lot of daily follow-up work.

He clearly describes where the bulk of the effort lies:

He also handled billing every day:

After switching to Planubo, Florian Groß has significantly reduced the time spent on billing. By his own estimate, the tennis school now saves about one hour of administrative work per training group per month on billing alone. With around 20 training groups, that adds up to about 20 hours per month.

Since coaches have been managing their court reservations and scheduling appointments more independently in Planubo, a large portion of the organizational workload has been eliminated for Florian Groß. He estimates that this saves the tennis school about 30 to 45 minutes of administrative time per training group each month.

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Why Planubo?

As Excel, smartphone notes, and daily follow-up work began to take up more and more time, Florian Groß started looking for a centralized solution. Collaboration was a key factor in Florian Groß’s decision:

How the Groß Tennis School Works Today

The way they work changed step by step: Today, the tennis school manages appointments in the shared calendar and team calendar. Coaches book their own lessons and bill for them directly in the tool. Customer data and team roles are managed centrally in the customer and team management sections; announcements and messages are handled through the integrated communication system.

What has specifically changed thanks to Planubo

The change is particularly evident in day-to-day operations when it comes to billing. Invoicing is now significantly less time-consuming because many steps are handled directly within the system, and coaches record their own sessions.

Team collaboration has also become more self-directed. Because coaches manage their own hours and bookings, the coordination effort is further reduced by about 30 to 45 minutes per training group per month. At the same time, there are fewer follow-up questions, fewer billing errors, and significantly greater transparency across all bookings.

Tip for other tennis schools

For Florian Groß, the switch has paid off in one key area: Less time spent on administration means more time for the actual goal—providing quality tennis instruction.