What's a good iOS app for coordinating group communication, especially for teams or clubs?

GroupMe is honestly my go-to for keeping my soccer team and book club organized. We tried WhatsApp and Messenger, but not everyone has an iPhone, and GroupMe works across iOS and Android seamlessly. You can create groups, give them fun names, and even set up subgroups for specific tasks—like one for scheduling practices and another for social stuff. The best part? You don’t need to download the app to get messages; people can reply via SMS if they want, which is huge for reaching folks who aren’t super techy. I also love the polling feature for deciding on meetup times—no more endless ‘when works for everyone?’ threads. Oh, and photo/video sharing is a breeze. Only downside is sometimes notifications can get overwhelming if the group is super active, but you can mute chats or customize alerts. For free, it’s a no-brainer.