r/whatsthatbook

Community Overview

About r/whatsthatbook

Can't remember the title of the book you've enjoyed reading? Crowdsource it to readers on Reddit!

The community at a glance

r/whatsthatbook is a Subreddit for Reading and Readers with roughly 333K members. It has been around since 2013. It uses a forum format for communication. It is the 6th largest community in the Books topic page and the 7th largest community in the Reading topic page.

Roughly 37K members have joined in the past year. Popular discussion topics include Book, Ya, and Children. Product recommendations often mention books about psychology and fantasy series.

On Reddit
Established 2013
333K Members

Subreddit Analysis

via GummySearch
Yearly: +37K members
Growth: +12.7% / year

Member growth over time

All time (yearly)

  • 2024: 42K members
  • 2025: 40K members
  • 2026: 17K members

Past year (monthly)

  • Jul: 3K members
  • Aug: 3K members
  • Sep: 3K members
  • Oct: 2K members
  • Nov: 3K members
  • Dec: 3K members
  • Jan: 3K members
  • Feb: 3K members
  • Mar: 3K members
  • Apr: 4K members
  • May: 3K members
  • Jun: 896 members

Topics

  • Book
    261 posts in the past month
    #1
    Book
    261
  • Ya
    86 posts in the past month
    #2
    Ya
    86
  • Children
    83 posts in the past month
    #3
    Children
    83
  • Fantasy
    69 posts in the past month
    #4
    Fantasy
    69
  • Looking For A Book
    57 posts in the past month
    #5
    Looking For A Book
    57

Flair

  • UNSOLVED
    200 posts in the past month
    1. 3 children find themselves the only survivors of a passing meteorite releasing a toxic gas and killing the entire planet by playing around with a science kit (wolf on the book cover)
    2. What's that book or short story about a guy who is turned into a door?
    3. NOT HOUSE OF LEAVES. A man describes a house which is infinitely large on the inside...
    #1
    UNSOLVED
    3 children find themselves the only survivors of a passing meteorite releasing a toxic gas and killing the entire planet by playing around with a science kit (wolf on the book cover) · What's that book or short story about a guy who is turned into a door? · NOT HOUSE OF LEAVES. A man describes a house which is infinitely large on the inside...
    200

Product recommendations

  • books about psychology
    2 posts in the past month
    1. Can you recommend books about psychology?
    2. Can you recommend books about psychology?
    #1
    books about psychology
    Can you recommend books about psychology? · Can you recommend books about psychology?
    2
  • fantasy series
    2 posts in the past month
    1. AV club recommended fantasy series
    2. Fantasy recommended reading from 2007-ish
    #2
    fantasy series
    AV club recommended fantasy series · Fantasy recommended reading from 2007-ish
    2

Frequently asked questions

Who is r/whatsthatbook for?
Best for Reading and Readers enthusiasts looking for a Reddit-based community with forum discussion.
Is r/whatsthatbook free to join?
This listing is not marked as paid-only. Access rules and any fees are decided by the community.
How many members does r/whatsthatbook have?
Roughly 333K members, based on figures reported by the community or its host. Member counts are approximate and change over time.
What platform is r/whatsthatbook on?
r/whatsthatbook runs on Reddit. Reddit communities (or "subreddits") are forum-based groups on the popular social news aggregation, web content rating, and discussion website Reddit. Reddit is commonly known as "the front page of the internet". Users submit content to the site such as links, text posts, and images, which are then voted up or down and discussed by other members. From investing Reddit communities, to professional ones, to ones just for laughs, you're likely to find a community for you on Reddit.
What topics does r/whatsthatbook cover?
On the Hive Index, r/whatsthatbook is organized under Reading, Readers.
How do I join r/whatsthatbook?
You can join r/whatsthatbook by clicking this link, or pressing the "Go to community" button above.
What are the Reading communities like?
Communities for readers to share recommendations, discuss books, and participate in reading challenges. Reddit has massive subreddits for book suggestions and genre discussions, with Discord servers running read-alongs and buddy reads. Good for finding your next book, talking through what you just finished, or connecting with readers who share your tastes.

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