What's the best iOS app for finding local hobby groups and in-person events?

Meetup is a long-standing platform designed specifically for connecting people with shared interests through local, in-person gatherings. For anyone looking to move beyond digital interactions and build a community around a hobby, sport, or professional field, the app provides a centralized directory of user-organized groups. Its core functionality revolves around searching for groups by category and location, then browsing a calendar of upcoming events with details on attendance, cost, and venue. A key feature is the ability to join groups, which then populates a personalized home feed with relevant event suggestions. Users can RSVP directly through the app and receive reminders. However, the experience can vary significantly by region and the activity level of local organizers. Some reviews indicate occasional technical bugs, like the '601 error' that prevents event listings from loading for some users, though these seem intermittent. For a user who recently moved to a new city and wants to find a weekly running club or a board game night, Meetup simplifies the discovery process that would otherwise require combing through multiple social media sites and forums.