Cognito — AI Reading Companion

Cognito — AI Reading Companion

Chat with your books. Ask questions, get summaries, dig deep

C
@caiadowork
Published on Apr 24, 2026
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About 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.

Product Insights

Cognito is a mobile productivity application designed for deep text interrogation through AI-driven chat and semantic search. It integrates with EPUB and PDF formats to facilitate knowledge retention without data leaving the user device.

  • Privacy-focused architecture utilizing local device processing for book data.
  • Semantic search capabilities that find concepts based on context rather than exact keywords.
  • Native support for EPUB and PDF files imported directly from mobile storage.
  • Freemium model offering a low-cost entry point for unlimited library access.

Ideal for: Students, authors, and non-technical readers who need to extract specific insights and summarize academic or professional texts on mobile devices.

Screenshots

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Comments (1)

chaudharyarun5797
@chaudharyarun5797Apr 24, 2026

Chatting with your books and asking questions is a fantastic way to retain and engage with content. This turns passive reading into active learning.

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