Upload anything
Drop in PDFs, textbooks, manuals, notes and research papers. CRUMB treats every page like a fresh slice of memory bread.
Offline Knowledge Preservation · Memory Bread
Preserve knowledge, learn offline, and access your personal library even when the world goes dark.
From forgotten PDF to glowing memory — everything happens on your device, never in a cloud.
Drop in PDFs, textbooks, manuals, notes and research papers. CRUMB treats every page like a fresh slice of memory bread.
Your documents are indexed, summarized and imprinted into searchable knowledge — right on your device. Nothing leaves it.
Questions are answered from your vault, with flashcards and quizzes baked in. All of it works with the internet switched off.
Four capabilities, one quiet promise: your knowledge survives anything.
Store and organize documents into knowledge collections — engineering, medicine, survival, notes — each one a warm slice of bread.
Ask questions and receive answers from stored content — no internet, no API, no tracking. Pure local reasoning.
Every source becomes summaries, key concepts, flashcards, quizzes and study guides — a permanent imprint on your memory.
When the internet dies, critical knowledge doesn't. First aid, disaster guides and manuals stay one tap away.
Every uploaded source becomes a digital bread slice. Drop slices into the Memory Tray to make them your active knowledge sources — try it.
Drop a knowledge slice here
CRUMB keeps the essentials pre-imprinted so a blackout never means a blank page.
No cloud. No signal. No problem.
“A crumb of knowledge. A lifetime of memory.”