I’m cofounder of an app called dateit an event planning and RSVP app we have been developing over the past couple of years. We started it because we noticed many of our friends were leaving Facebook, and group texts were becoming a hassle. While it might not have every feature you’re looking for just yet, we’re actively working to expand its functionality. In the future, we’re hoping to introduce features like communities and a public events feed.
You can check it out at https://dateit.com/ I’d be happy to offer you and maybe some others here free access to our premium features so you can experience everything the app has to offer. Just create an account and email me at [email protected] and mention this post.