Chrome Extension · AI-Powered · Free to Start

Stop
watching.
Start
learning.

An AI co-pilot that sits on top of any lecture and turns passive watching into real comprehension. Notes, exam prediction, flashcards — fully automatic.

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Works onCanvasYouTubeZoomCoursera
Live
Notes
Ask
Cards
Review
Summary
Lecture covers cell cycle checkpoints, focusing on G1/S and spindle assembly regulation via Cyclin-CDK complexes.
Key Points3
4:12Mitosis checkpoints prevent premature division
6:30G1/S checkpoint checks for DNA damage first
8:45Cyclin-CDK complex controls cell cycle progression
Terms2
5:01Cyclin — regulates CDK activity at checkpoints
9:18Apoptosis — programmed cell death pathway
Exam Topics2
6:30G1/S checkpoint mechanisms
8:45Cyclin-CDK regulatory complex
Alert
7:52Prof glossed over G2/M distinction — worth reviewing
20M+
US college students
$30B
EdTech market size
#1
cause of student burnout: inefficient studying
$0
to get started
How it works

Install once.
Learn everything.

No setup. No copy-pasting. Open a lecture, click the button, and Absorb handles the rest.

01
Install in 30 seconds
Add to Chrome. Enter your Claude API key. Zero onboarding, zero forms. Works immediately.
02
Open any lecture
Canvas, YouTube, Zoom recordings. Click the blue A button in the corner. Starts instantly.
03
Learn in real-time
Key points surface every 45 seconds. Ask questions mid-lecture. Get alerted when your prof glosses over something.
04
Ace the exam
Absorb flags what's likely on the exam, auto-generates flashcards, and schedules your review automatically.
Features

Built for how
students actually learn.

Designed to be shared
Exam
Prediction
Absorb tracks what your professor emphasizes, repeats, and lingers on — then surfaces what's most likely to appear on your exam. Built for sharing. The kind of output you screenshot and send to your study group.
Absorb predicts · BIO 302 Midterm
★G1/S checkpoint mechanismsHIGH
★Cyclin-CDK regulatory complexHIGH
→Apoptosis vs necrosisMED
→Spindle assembly checkpointMED
→Telomere shortening roleMED
Based on emphasis + syllabus analysis
Real-time
Ask anything, mid-lecture
Confused right now? Ask it. Absorb answers using only what's been covered so far — like a TA who watched with you.
Real-time
Confusion alerts
When your professor jumps topics without explaining, Absorb flags it before you fall behind.
Study
Auto flashcards
Every key term becomes a flashcard. Built-in spaced repetition resurfaces the hard ones right before your exam.
Study
Speed mode
Watch at 2× with Absorb auto-pausing on anything important. 3-hour lecture in 45 minutes.
Study
Syllabus decoder
Upload your syllabus. Absorb tells you what's actually important and what you can skim.
Study
Knowledge graph
See all lecture topics connected visually. Before midterms, see exactly where your gaps are.
The science

Not just another notes app.

Absorb is built around three learning techniques with decades of research behind them. This isn't new — but nobody has automated all three in one tool, on top of your actual lectures.

01
Active Recall
Cognitive Psychology
Retrieving information from memory is significantly more effective than re-reading notes. Absorb generates retrieval practice questions automatically at the end of every lecture.
02
Spaced Repetition
Hermann Ebbinghaus, 1885
Reviewing material at increasing intervals dramatically reduces forgetting. Absorb tracks what you've learned and resurfaces weak concepts at the optimal moment before your exam.
03
Elaborative Interrogation
Memory Research
Understanding why something is true leads to deeper retention than memorising facts. The Ask tab pushes you to engage with material actively rather than passively consuming it.
04
The Forgetting Curve
Ebbinghaus, replicated
Without reinforcement, students forget roughly 70% of lecture content within 24 hours. Absorb's spaced repetition loop directly counteracts this.
05
Desirable Difficulty
Robert Bjork, UCLA
Making learning slightly harder in the short term produces better long-term retention. Absorb's review questions are designed to challenge — not just confirm what you already know.
06
Passive vs. Active Learning
National Training Laboratories
Lecture attendance alone yields among the lowest retention rates of any study method. Adding active recall and spaced repetition pushes retention rates from ~5% to over 90%.
Pricing

Less than a textbook.
Worth more than one.

Free
$0
forever
✓5 lectures per month
✓Live notes + key points
✓10 questions/day
✓Basic exam prediction
–Flashcards + spaced repetition
–Speed mode
Pro
$20
per month · cancel anytime
✓Unlimited lectures
✓Full exam prediction
✓Unlimited questions
✓Auto flashcards + spaced rep
✓Speed mode
✓Syllabus decoder + knowledge graph
Study Group
$15
per user/mo · min 3
✓Everything in Pro
✓Shared notes + flashcard decks
✓Group exam predictions
✓Collaborative concept web
✓1 invite → 4 friends install
FAQ

Questions?
Answered.

Is Absorb really free?▾
What's the difference between Pro and Study Group?▾
How does the Study Group plan work?▾
What platforms does it work on?▾
Does it record my screen or microphone?▾
How does exam prediction work?▾
What happens to my data if I cancel?▾
Early access

Be among
the first to
try it.

Absorb is in early access. Join the waitlist and we'll reach out when a spot opens — or install the extension directly and start today.

Free, no credit card required
20M+
US college studentsare the market this is built for
3
learning techniquesactive recall, spaced repetition, elaborative interrogation
70%
forgottenof lecture content within 24hrs without reinforcement
$0
to startfree tier, no credit card required
Request a Feature →