BookBeam and Tropesmith answer different questions. BookBeam tells you what’s selling; Tropesmith tells you what readers are asking for that supply hasn’t caught up to. Here’s the honest split.
Fair play first: Where BookBeam is strong: a huge ~200M-book database, real Amazon sales estimates, and a broad self-publishing toolkit. For retrospective, supply-side sales intelligence it’s excellent, and we won’t pretend to match its catalogue breadth.
BookBeam vs Tropesmith + PlotProse, side by side
The verdict
Use BookBeam to size a market that already exists; use Tropesmith to find the gap before it’s crowded. They’re complementary — but only one tells you which unwritten book readers are begging for.
Tropesmith scores your exact trope stack on live demand vs supply — the archetypes, heat, comps and cover direction readers are asking for that nobody’s writing yet.
Get your book’s demand-vs-supply Map →New here? Start with the free romance trope library or the 2026 demand report.
🎁 Free: your subgenre’s live trope-demand snapshot
Evaluating romance-author tools? Get the live trope-demand data that sets Tropesmith apart — the top trending tropes in your exact subgenre, free.