I did a lot of research for a free app that would make it easy for a group of people to determine what day works best for them, requiring no sign up for anyone besides the person setting it up. This is the best one I've found - https://xoyondo.com/. Source: 12 months ago

Certainly can be done, but there are already calender schedulers. One I use is https://xoyondo.com for d&d nights lol. Source: over 1 year ago

I use Xoyondo for this. Much less trouble than Doodle. Source: over 1 year ago

Use a scheduling app to find out when everyone will be free. We used Doodle for a while, but the creators kept changing/breaking it, so we've switched to xoyondo.com which is basically Doodle when Doodle was good. Source: almost 2 years ago

I've recently discovered https://xoyondo.com/ which is basically doodle as it was approximately 10 years ago... Source: almost 2 years ago

I started using Metroretro a few months ago and it's really nice, except for the ability to export retro items I think it covers everything you listed. Also it's free and it comes with some useful templates. Source: about 3 years ago

To improve the developer experience, I needed to understand the real problems the engineers were facing, so I scheduled a brainstorming meeting. In this meeting, I explained my project and shared a Metro Retro board to write down all issues our application had at that time, what was the bad DX we had, and doubts related to this application (e.g. How do we handle data fetching?; how do we handle error handling?;... - Source: dev.to / about 3 years ago