An AI-powered theological research assistant. Search 200 Reformed & Puritan works — Calvin, Spurgeon, Owen, Edwards, Luther, and more.
No credit card. Sign in with your email.
From the church fathers to the Reformers to the Puritans and modern Reformed thinkers — all in one searchable corpus.
No setup. No scanning. Just ask.
Type any theological question in plain English. "What does Calvin say about predestination?" — it's that simple.
Every work is searched simultaneously — vector similarity finds the most relevant passages across all 111K chunks.
A clear, synthesized answer with inline citations. Like having a conversation with your bookshelf.
Whether you're preparing Sunday's sermon or diving deep into a doctrine.
Find the perfect quote from Spurgeon or Calvin in seconds. Stop flipping through commentaries — search them all at once.
Compare what Owen, Edwards, and Charnock say on the same topic. See how the Reformed tradition developed on any doctrine.
Photograph your own bookshelves and search your personal library alongside the catalog. Your books + 200 classics together.
Snap a photo of your shelves. We'll identify every title and add them to your searchable library.
Take a photo of any bookshelf. Bookshelf IQ identifies the titles using AI and adds them to your personal library alongside the 203-work curated catalog. Your whole library, searchable from one place.
Enter your email and we'll send you a sign-in code.