A ladder competition is a ranking that never stops moving. Instead of one tournament weekend, members play each other whenever they meet at the club, and every result changes the order. Beat someone above you and you climb; lose to someone below you and you slip. After a few weeks the ladder shows who is in form, not just who turned up on one Saturday.
Laddercompetitie runs that ladder for your club. Results are entered on a phone beside the court, the standings update the moment a match is saved, and everyone can see the table without asking the organiser to update a spreadsheet. One club can run as many ladders as it needs: singles and doubles, men's, women's and mixed, a competitive ladder next to a recreational one.