The note-taking app
for students
so you don't have to.

It records your lectures, turns them into a transcript, then generates summaries, infographics, and quizzes for focused study.

How memory works

18:00

Okay, let's keep going. So far we've been treating memory like a recording — you experience something, you store it, you play it back later. Today I want to complicate that picture, because memory isn't really a recording. It's a reconstruction.

18:07

Live
18:07

Used by international students at

StanfordMITHarvardOxfordCambridgeETH ZürichEPFLTU DelftUCLImperialTsinghuaPKUUTokyoSNUKAISTHKUSTNUSUTorontoMcGillMelbourneStanfordMITHarvardOxfordCambridgeETH ZürichEPFLTU DelftUCLImperialTsinghuaPKUUTokyoSNUKAISTHKUSTNUSUTorontoMcGillMelbourne
/01In class

Stay with your professor, not the notes.

Keep up while class is happening. Classp captures the parts you would otherwise miss.

Let's start with the basic architecture, everything you sense lands first in sensory memory.

我们先从基础架构说起，你感知到的一切都会先进入感觉记忆。

Englishहिन्दी中文EspañolবাংলাFrançaisMelayuIndonesiaPortuguês
العربيةРусский日本語한국어DeutschTiếng ViệtTürkçeไทยItaliano

Every word, kept up with.

A clean live transcript, with translation alongside in 100+ languages.

  1. Three stages of memory

    • Path: sensory → working → long-term.

    • Only what you attend to reaches working memory.

  2. Working memory is limited

    • Capacity: ~4 meaningful chunks at once.

    • Chunking: group items to fit in more.

    • A phone number is 3 chunks, not 10 digits.

  3. Spacing beats cramming

    • Spacing: reviews flatten the forgetting curve.

    • Same study time, far better retention.

See the key idea.

Catch the main idea before the lecture moves on.

Wait — why does testing myself beat just re-reading my notes?

Because retrieval is the workout.

Re-reading feels productive, but it's mostly recognition — your brain coasts on words it already knows. Pulling the answer out of memory forces the trace to rebuild, and each successful retrieval makes the next one easier.

That's the testing effect: a quick self-quiz strengthens a memory more than another pass over the same page.

So I should quiz myself before I feel ready?

Exactly. A little struggle is the point — that effort is what locks it in. Go for small, frequent checks instead of one big cram.

Ask in the moment.

Ask the AI the question you didn't want to raise out loud.

/02After class

Your study set, already built.

Class ends, and your review is ready. Go from catching up to checking what you actually understood.

Summary

The lecture, cleaned up.

Skip the transcript wall. Get the lecture’s main ideas, details, and takeaways in a structure you can review fast.

Behavioral Economics Lecture 5 — Prospect Theory, Loss Aversion, and Framing

Prospect theory describes how people often choose under risk: they evaluate gains and losses relative to a reference point, losses feel more powerful than equal gains, and framing can change decisions even when the math is identical.

Expected Utility Theory vs. Prospect Theory

Expected Utility Theory

Traditional model

  • Assumes people evaluate final wealth or final outcomes.

  • A gamble is judged by comparing the expected utility of possible final outcomes.

  • Often treats risk aversion as coming from concave utility.

Prospect Theory

Descriptive model

  • Describes how people often actually choose under risk.

  • People evaluate outcomes as gains or losses relative to a reference point.

  • Choices are shaped by reference dependence, loss aversion, framing, and probability weighting.

  • Risk attitudes can change depending on whether people are in the domain of gains or losses.

Core Concepts from the Lecture

Reference dependence

People judge outcomes relative to a reference point, such as what they currently have, what they expected, what someone else got, or what they feel entitled to.

Loss aversion

Losses hurt more than equivalent gains feel good; a common shorthand is that losses feel about twice as powerful as gains of the same size.

Framing

The same objective choice can lead to different decisions when described as lives saved versus lives lost, or survival rate versus mortality rate.

/03Your library

Every lecture, in one place.

Sorted by course, with titles and snippets ready when you need to find a lecture again.

Classp

Today

48 min
New

Cell cycle checkpoints

51 min

Signal transduction

Receptor binding, second messengers, and how extracellular signals reach the nucleus.

This Week

50 min

Endoplasmic reticulum

Rough vs. smooth ER, protein folding quality control, and lipid synthesis pathways.

47 min

Protein synthesis

Ribosome assembly, codon-anticodon pairing, and how elongation factors speed translation.

55 min

Cytoskeleton

Actin filaments, microtubule dynamics, and the motor proteins that drive cell movement.

This Month

46 min

Mitosis & division

Spindle assembly, checkpoint proteins, and the sequence from prophase to cytokinesis.

43 min

Apoptosis

Caspase cascades, Bcl-2 family proteins, and how cells execute programmed death.

49 min

DNA packaging

Histone octamers, nucleosome spacing, and how chromatin compaction controls gene access.

44 min

Nuclear transport

Import and export signals, Ran-GTPase gradient, and how large molecules pass the nuclear pore.

Earlier

51 min

Cell membrane

Transport proteins, diffusion, and the conditions that change membrane permeability.

44 min

DNA replication

Helicase unwinding, leading and lagging strand synthesis, and the role of Okazaki fragments.

52 min

Mitochondria

Cell respiration, membrane folds, and why ATP production depends on surface area.

/04Voices

Built for international students · STEM · Pre-med · Law · MBA majors

My architecture professor fires off technical terms faster than I can place them. The live Spanish translation keeps up, so I stop losing the next point to looking up the last one.

C.M.

4th-year Architecture

My finance prof talks at 180 wpm. I used to re-listen at 0.7x for hours after class. Now the Korean keeps up live, first semester I'm not lost.

S.P.

2nd-year Finance

I used to translate my professor's English in my head and miss what came next. Now the Chinese transcript shows up live, I just listen.

Y.T.

3rd-year Mechanical Engineering

/05Privacy

Yours, only.

Your session content stays private, encrypted, and under your control — with no third-party sharing and no use for AI training.

Secure Data

Your transcripts and notes travel through encrypted connections and are stored safely in your account.

Deleted on Your Command

Delete a session and it's permanently cleared from our servers within 30 days — including transcripts, summaries, and Q&A history.

No Third-Party Sharing

Transcripts and notes are never sold or shared with advertisers, analytics platforms, or unrelated services.

No LLM or AI Training

Your content is not used to train any AI model — ours or anyone else's.

/06Pricing

Clear pricing. Cancel anytime.

Try every feature free for 90 minutes. As your courses pile up, Pro starts at $8.33 a month, less than a textbook chapter.

Free

See what Classp can do

$0/month

No card needed, quota doesn't expire.

  • Real-time transcription & translation · 90 min to try in a live lecture
  • Ask AI · 20 questions, in class or while you review
  • All review tools · 5 runs — Summary, Mindmap, Quiz, Flashcards & Infographic
  • Every feature included · your notes never expire

Pro

Your everyday study companion

$8.33$12/month

Billed $99.99/year

  • Real-time transcription · 600 minutes a month for your key classes
  • Real-time translation · follow along in 100+ languages
  • Ask AI · 300 a month, in class or while you review
  • Summary · auto-built after every class
  • Mindmap · see how the ideas connect
  • Quiz · surface what you only thought you understood
  • Flashcards · turn key concepts into quick review cards
  • 100 runs a month · shared across mindmap, quiz & flashcards
  • Infographic · 15 a month for fast pre-exam review

Max

For your heaviest terms

$24$29/month

Billed $289/year

  • Real-time transcription · 2,400 minutes a month — your whole timetable
  • Real-time translation · follow along in 100+ languages
  • Ask AI · 800 a month, in class or while you review
  • Summary · auto-built after every class
  • Mindmap · see how the ideas connect
  • Quiz · surface what you only thought you understood
  • Flashcards · turn key concepts into quick review cards
  • 400 runs a month · shared across mindmap, quiz & flashcards
  • Infographic · 40 a month for fast pre-exam review
Cancel anytime, no surprise charges.
/07FAQ

What you'd ask before signing up.

Can't find your answer? Feel free to reach out anytime — support@classp.ai

100+ languages at launch — including the major European, East Asian, South Asian, and Middle Eastern ones. We add new languages based on user requests.

Try the next lecture with Classp.

Start free with 90 minutes for your next lecture.