The right comparison depends on what your club is running today. Most UK sailing clubs sit in one of three places. The first is the spreadsheet club, where the membership list lives in Excel, the duty rota is a Google Sheet, and the only "system" is the muscle memory of whichever volunteer has been on the committee longest. That works at small scale. It stops working when the committee turns over and the new lot can't find half the files.
The second is the patchwork club. Duty rota in one tool, payments in another, a website built somewhere else, an email list on top, and a shared drive holding all of it together. Each tool does its one job well. The problem is the seams between them - when someone joins, three different systems need updating, and when someone leaves, two of them get forgotten.
The third is the generalist platform club. The committee picked a cross-sport club management tool that was meant to handle everything from rugby to rowing, and the sailing-specific bits never quite fit. There's no concept of an OOD, no qualification gating on safety boats, and the duty types had to be bent into "events" because the platform never had sailing in mind.
Pick the comparison below that matches your situation. If a spreadsheet still suits your club, the spreadsheet page will tell you so. The aim is not to argue every club should be on SailHQ - it is to give you enough detail to decide for yourself.