sinnet

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sinnet is a tournament and league software for tennis, badminton and padel clubs. Club captains and organizers use it to run internal competitions: club championships as knockout tournaments with seeding, byes and consolation draw, season leagues with promotion and relegation, Swiss-system tournaments, challenge ladders, doubles and mixed events, and team formats. sinnet covers the whole workflow – entry form and online registration, draw, schedule with round deadlines, result entry by the players themselves with validation against tennis scoring rules, and standings and brackets that update automatically after every result. Court booking is available as an add-on. sinnet runs as a web app (PWA) on any device, no app store download needed, in German and English. It is built for club-internal competitions, not for official federation league play. Free plan for clubs with up to 16 members; paid plans from €9/month based on active members, with a free 6-month trial of all features.