"2 million+ books" is a big number. Big enough to invite skepticism.
Any app can make large catalog claims in marketing copy. What matters is whether the depth holds up when you go looking for books in your specific niche - not just the bestseller lists, but the mid-list titles, the specialized topics, the books your particular customers actually want.
This article walks through verified catalog counts across five real niches to answer the question: does BooksCloud's 2M+ claim hold up?
Where the Catalog Comes From
BooksCloud aggregates inventory from a network of 30,000+ publishers. This includes major publishing houses, mid-size specialty publishers, and academic presses - essentially, any publisher that distributes through mainstream US book distribution channels.
New titles enter the catalog as publishers supply them. When a publisher releases a new book into distribution, it becomes available in BooksCloud. This is how the catalog stays current without BooksCloud needing to manually curate additions.
Out-of-print and out-of-stock titles are removed from the catalog automatically, which means the 2M+ figure represents actively available books - not a historical archive that includes titles you can't actually sell.
Five Niche Searches: The Verified Numbers
1. Knitting - 1,800+ Titles
The knitting category is a useful benchmark because it's a genuinely passionate hobby niche with a dedicated reader base - but it's not large enough to be treated as a major category by most book retailers.
BooksCloud carries 1,800+ titles under knitting. This spans beginner guides, pattern collections, technique deep-dives, knitting history, and sub-niches like lace knitting, colorwork, and sock knitting. For a Shopify store built around fiber arts or craft supplies, this is more than enough to build a robust book section.
2. True Crime - 4,500+ Titles
True crime is one of the most commercially active genres in American publishing, with strong crossover into podcasts, streaming, and social media. BooksCloud carries 4,500+ true crime titles - covering everything from classic cold cases to recent high-profile investigations, subgenres like forensic science and criminal psychology, and both narrative nonfiction and more analytical titles.
A dedicated true crime store or a general nonfiction bookstore would have no trouble filling a comprehensive section from this inventory.
3. Keto Cooking - 800+ Titles
Keto is a specific sub-niche within the broader cooking and health categories. At 800+ titles, BooksCloud's coverage goes well beyond the handful of bestsellers you'd expect to find anywhere. This includes keto for different demographics (keto for women, keto for athletes, keto for beginners), keto recipe books organized by meal type, and keto titles with a medical or therapeutic focus.
For a health food, supplement, or low-carb lifestyle store, 800+ titles offers genuine selection.
4. Leadership - 12,000+ Titles
Leadership is a major category in business publishing, and the catalog depth reflects it. 12,000+ titles cover every dimension of the topic: executive leadership, team management, organizational culture, leadership psychology, biographies of notable leaders, and specialized leadership topics like leading through change, leading remote teams, and first-time manager guides.
A business book store, an executive education platform, or a corporate training company could build an entire catalog from this single sub-category.
5. Picture Books (Ages 3-6) - 25,000+ Titles
Children's publishing is one of the most active and commercially significant segments of the US book market. BooksCloud's 25,000+ picture books for ages 3-6 is the single largest sub-category we checked - and the depth is appropriate to the market.
This covers board books, picture books, early reader titles, bedtime stories, educational picture books, diverse representation titles, and tie-ins with popular children's media. For a children's boutique, a toy store, or a parenting-focused store, this depth is genuinely impressive.
What's NOT in the BooksCloud Catalog
Being clear about this is important.
Self-published books that are not in mainstream US distribution are generally not available. If an author self-publishes via a platform like IngramSpark and distributes broadly, their title may appear. But books sold only on Amazon KDP or through an author's personal website will not.
International-only editions - books published exclusively for non-US markets - are not included. BooksCloud's catalog is US distribution-focused.
Out-of-print titles are automatically excluded from the live catalog. If a title was once available but is no longer in print, it will not appear as an available product. This is by design - you can only sell what can actually be shipped.
Digital books, audiobooks, and e-books are not part of the BooksCloud catalog. The service covers print books only.
The Conclusion
The 2M+ claim is real.
The verification isn't just about the headline number - it's about depth in the places that matter to actual merchants. A niche as specific as keto cooking yields 800+ titles. An even more specific sub-niche like picture books for a narrow age range yields 25,000+.
Whether you're building a general bookstore or adding a targeted book section to a specialty store, the catalog has the depth to support it. And with new titles added continuously as publishers distribute them, the number grows over time.
Browse BooksCloud's full catalog → https://apps.shopify.com/bookscloud