Cognito — AI Reading Companion

You know that feeling: you read something important, highlight it, then never look at it again. Or you spend 20 minutes hunting for that one insight from a book you finished last month. Cognito fixes that. It lets you actually talk to your EPUBs and PDFs. Ask "what was the main argument in Chapter 3?" and get an answer based on the actual text—not some generic summary, but what's in *your* book. Find concepts even when you can't remember the exact wording. Key Features: -Ask Your Book Anything Stuck on a dense paragraph? Ask "explain this like I'm 5." Want the big picture? Ask "what are the key arguments?" Answers come straight from the book's text—no hallucinations, no going off-topic. Find Ideas, Not Just Words Semantic search that understands context. You don't need to remember the exact phrase. Search "that thing about cognitive biases" and find the relevant section even if the word "bias" never appears there. Private by Default Your books stay on your device. We don't upload them anywhere. Apple Intelligence handles most tasks locally; cloud models only kick in for heavier analysis—and only when you want them to. Works With Your Library Native EPUB and PDF support. Import from Files app, cloud storage, or download directly. No weird conversion steps. Use Cases - Students: Actually retain textbook material instead of re-reading the same chapter three times - Researchers: Extract insights from papers without drowning in highlights - Professionals: Digest business books and reports on your commute - Curious readers: Stop losing track of good ideas Pricing Free for 3 books. $4.99/month for unlimited.