With Max the app appears with its own name and logo in the App Store and on Google Play.
Members and guests see free courts on their smartphone and book and pay for them in just a few taps.
Members book tennis courses right in the app and always keep track of their dates and training sessions.
Each booking comes with a PIN or QR code in the app, which players use to enter the tennis facility.
Cancelled training, rescheduled matches and news reach every phone at once, for everyone or single teams.
Even without a store app, everything runs as a web app on every phone, straight from the home screen.