Crab Fit alternative
https://getnosignupschedulermag.juniperbrief.com/posts/why-a-no-sign-up-scheduler-changes-the-game-for-group-planning
Crab Fit is great for scheduling, but sometimes you need something simpler or more private. I found that using a shared spreadsheet with conditional formatting works well for smaller groups. It lets everyone mark their availability in real time without signing up, and you can tweak it to avoid showing personal info. It feels less formal and more flexible for quick planning.