Every fact you save gets a free upgrade. Watch it happen below.
A day on Venus is longer than its year.
Venus takes 243 Earth days to rotate once but only 225 to orbit the sun — and it spins backward, so the sun actually rises in the west.
You're not alone. Most people forget 90% of what they read within a week. Your current notes app isn't helping.
You highlight 30 passages, close the book, and forget everything within days. That investment? Gone.
Your notes app is a black hole. Thousands of entries you'll never search, never revisit, never benefit from.
You just want to save a fact and remember it. Not learn a new tool.
Why we built Knodo
We kept highlighting books and forgetting everything within a week. Every "second brain" app we tried needed an hour of setup before it saved us a minute.
So we built the smallest possible tool: save a fact in 5 seconds, let AI do the remembering. That's it.
5 sec
to capture a fact
$0
to start, no card
Purpose-built for one thing: capturing individual facts from any source and expanding them with AI-powered context. No complexity. No setup. Just your knowledge, organized and enhanced.
Tap "Expand with AI" and watch a simple fact transform into rich context — historical significance, related concepts, and insights you'd never find on your own. Like a research assistant in your pocket.
Your personal knowledge vault keeps every fact searchable, categorized, and at your fingertips. Browse by category, search by keyword, or just scroll through everything you've learned.
Watch your knowledge grow with streaks, stats, and a personal knowledge score. Knodo makes building your second brain feel rewarding — not like a chore.
Type it, speak it, or scan a book page. Save any fact in under 5 seconds.
AI suggests categories and tags. Find anything in seconds — even facts from months ago.
One tap: AI generates context, history, and insights. Like a personal research assistant.
Browse and revisit your vault anytime. Your knowledge stays organized and always at your fingertips.
Built for speed, intelligence, and simplicity. Every feature serves one purpose: helping you remember.
Hands-free voice dictation to capture facts on the go. Perfect for commuters and audiobook listeners.
One tap transforms a simple fact into rich context, history, and insights. Like a research assistant in your pocket.
AI links related facts automatically. Your vault reveals hidden patterns across months of learning.
Point your camera at a book page. Knodo reads it, saves it, and organizes it — no typing required.
Track your learning with streaks, stats, and a personal knowledge score. Watch your second brain grow over time.
Glanceable widgets right on your home screen. See your latest facts and knowledge score without opening the app.
Save "Egyptian cubit = 18 inches" and tap Expand. In seconds, AI delivers historical context, construction methods, related measurements, and more — all personalized for your vault.
3-5 paragraphs of rich context generated in under 5 seconds
Cites verifiable information — not generic AI fluff
100 expansions per month with Premium
The Egyptian Royal Cubit
The cubit was approximately 18 inches, based on the length of the Pharaoh's forearm from elbow to fingertips.
The Egyptian Royal Cubit
The Royal Cubit, standardized around 2700 BCE during the Old Kingdom, measured approximately 52.4 cm (20.6 inches). It was subdivided into 7 palms of 4 fingers each — 28 digits total.
This measurement system was critical to constructing the Great Pyramid of Giza, where the base dimensions show accuracy within 2.1 cm — remarkable precision for 2560 BCE.
Master cubit rods made from granite were kept in temples as references, making this one of humanity's earliest standardized measurement systems.
The three things people ask before downloading.
More questions? Contact support →
Save your first fact in 30 seconds. Let AI turn it into deep knowledge. Free to start — no credit card needed.
