An offline study companion

Capernicus

Turn any PDF, EPUB, DOCX or text file into a personal tutor.

PDF · EPUB · DOCX · TXT · Markdown · Works offline

Built to help you actually learn.

Six ideas Capernicus is serious about. Reading is only half the work — these are the tools for the other half.

№ 01 · Privacy

Nothing leaves your device.

The tutor lives inside the app. Your documents, your questions, your answers — all of it stays on your machine. No accounts, no cloud round-trips, no telemetry. When the Wi-Fi drops, Capernicus doesn't notice.

№ 02 · Conversation

A tutor that has read the whole book.

Ask about a paragraph, a chapter, or the whole document. Answers are grounded in the text you gave it, not a vague memory of the internet. Narrow the scope to specific chapters when you want to drill in — or let it roam the full work.

№ 03 · Practice

Practice until it sticks.

Generate exercises and exams from the material. Write your answer, compare it to the model's, or ask for it to be graded with written feedback. Choose instant correction per question, or grade it all at the end, exam-style.

№ 04 · Flashcards

Flashcards that remember what you forgot.

Turn any document into a flip-card deck. Every question you miss in exercises or exams gets promoted straight into the deck — so the cards that show up are the ones you actually need to see. Focus, don't review what you already know.

№ 05 · Study plan

Your personalised study plan.

Capernicus estimates how long the material will take, then breaks it into a day-by-day schedule sized to the minutes you can spare. Drag chapters between days to rebalance, add or remove days, and let single-chapter exercises and exams tick themselves off when you pass them.

№ 06 · Progress

See yourself improve.

A seven-day trend of the work you did. Accuracy by kind — exercises, exams, flashcards. A streak counter that notices when you show up. And a quiet rank that climbs from Explorer to Expert as the weeks add up.