We make Arwy, so treat our entry with appropriate suspicion. The rest of this is written to be useful whether or not you ever download it.
First, decide how social you actually want to be
This is the question that decides everything else. Some readers want a public log and occasional comments. Some want a scheduled group. Some want one person on the same chapter at 11pm. These need completely different tools, and picking the wrong intensity is why people conclude "reading communities aren't for me."
Goodreads — the public shelf
Good for: tracking what you've read, seeing friends' ratings, and the sheer size of its review corpus.
Trade-off: it's a catalogue with social features rather than a place to meet anyone. You will not make a friend there by accident.
StoryGraph — tracking with better data
Good for: mood-based recommendations, content warnings, and genuinely good reading statistics.
Trade-off: like Goodreads, it's built around your relationship with books, not with people.
In-person book clubs and library events
Good for: real friendship. Nothing online matches sitting in a room with people once a month.
Trade-off: geography, scheduling, and the specific dread of committing to a book you might hate. Check your local library — most run more than people realise.
Discord and forum communities
Good for: deep genre-specific conversation, often with the writers present.
Trade-off: they move fast and reward being always-on. Easy to lurk in for a year without meeting anyone.
Arwy — the person on the same chapter
Good for: the specific gap the others leave. As you read, it shows you people currently reading the same book, and you can match and talk. Notes attach to the line that prompted them, so conversation happens inside the story rather than beside it. The shared book is the introduction — there's no "so what are you into?" because you both already know.
Where it's the wrong choice: if you mainly want to catalogue your reading and see statistics, StoryGraph or Goodreads does that better. If you want a face-to-face group, a local club beats any app. And it's Android-only for now.
The honest summary
Tracking → StoryGraph or Goodreads. Real-world friendship → your local library. Genre deep-dives → Discord. Someone to talk to about the chapter you're in right now → Arwy.
Whichever route you take, the hard part isn't the tool — it's saying the first thing. These conversation starters exist precisely for that, and making friends as an adult covers the broader version.
Want the reader on the other side of the page? Get Arwy.