Never scramble to take notes again.
Chalk listens, sees the screen, and writes your notes.

Whether in lectures, meetings, or technical reviews: Stop typing. Chalk listens, captures slides, and lets your phone snap pictures via instant QR link — synthesizing everything into structured notes.

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Lecture: Financial Markets & Risk — Chalk
SCREEN CAPTURE
Asset_Pricing_Lecture_04.pdf (p. 12/42)
Portfolio Theory & Risk Modeling
Capital Asset Pricing Model (CAPM)
$$E(R_i) = R_f + \beta_i [E(R_m) - R_f]$$
LIVE AUDIO & CAPTURE
Prof. Vance (Speaker) @ 01:14:20
"...unsystematic risk is eliminated by diversification. The market only prices systematic covariance..."

Capital Market Line & Systematic Risk

The expected return of an asset comprises the risk-free rate plus the market risk premium. Unsystematic individual risk is eliminated through portfolio diversification.

$$E(R_i) = R_f + \beta_i \left[E(R_m) - R_f\right]$$
  • Beta factor (βi): Sensitivity of asset return to broad market movements.
  • Risk-free rate (Rf): Benchmark sovereign bond yield as the hurdle rate.
  • Core point: Only systematic risk is compensated by the market with a risk premium.
Note or Directive to AI Synced with audio & summary
Duration: 1h 42m 12s
HOW IT WORKS

The 3-Step Principle

No stress, no frantic typing. Complete focus on the presenter.

01

Chalk runs silently

Chalk runs quietly in the background of your laptop. One click or pressing Alt+Space is all it takes — no complex configuration or audio routing cables.

02

You listen actively

You don't type a single word, staying completely immersed in the conversation. Chalk captures speech, slide transitions, and formulas in the background.

03

Structured notes in Obsidian

When finished, you receive clean, structured Markdown notes with key points, LaTeX formulas, and slide snapshots. Ready for Obsidian or your editor of choice.

USE CASES

Engineered for Demanding Discussions

Designed for students, engineers, and executives who need deep conceptual engagement.

01

University Lectures & Academic Seminars

Captures every derivation, side remark, and slide during multi-hour lectures without omission. Delivers pristine LaTeX equations.

02

Technical Reviews & Architecture Walkthroughs

Engage actively in architecture decisions. Chalk captures code snippets, data schemas, and technical trade-offs directly from shared screens.

03

Executive Strategy & Board Meetings

Maintain eye contact and presence in crucial negotiations. Chalk records commitments, metrics from slide decks, and produces prioritized action items.

04

Webinars & Virtual Conferences

Captures Zoom, Teams, and keynote livestreams via direct system audio and slide change detection, building searchable knowledge archives automatically.

Instant Smartphone Camera via Local QR Code

Scan a QR code from the HUD with your phone. Snap photos of handwritten notes, sketches, or projector screens — uploaded instantly over your local Wi-Fi or hotspot in under a second. Formulas and derivations are immediately synthesized into mathematical LaTeX.

PRIVACY

Your data belongs to you.
No middlemen. No servers.

Unlike cloud meeting bots, Chalk processes audio and screen captures exclusively locally on your hardware.

Zero cloud relays. Absolute data sovereignty.

Unlike cloud meeting bots that route your private conversations and confidential presentations through third-party servers, Chalk operates on a strict Local-First and Direct BYOK (Bring Your Own Key) architecture. Audio recordings and screen captures never leave your laptop unencrypted, communicating solely and directly between your workstation and your personal AI accounts with zero intermediary relays.

Storage & Notes
100% Local-First
Cloud Relays
Zero Servers
Telemetry
0 KB Collected
Native Hardware Vault
API keys are securely encrypted in macOS Keychain or Windows DPAPI.
Direct Provider Connection
Synthesis requests travel without detours from your device directly to Google, Anthropic, or OpenAI.
Zero Telemetry & Tracking
Zero telemetry, zero tracking cookies (§ 165 TKG), zero central relay servers.
TRY FOR FREE

Try Chalk with a Free Google Gemini API Key

Bring your own free key (Direct BYOK): Zero cost, no credit card, no subscription fees, no commitments. Connect directly from your workstation to Google AI Studio.

01

Visit Google AI Studio

Open aistudio.google.com and sign in with any Google account. No credit card or billing details required.

02

Create your API Key

Click 'Get API key' in the sidebar, then select 'Create API key in new project'. It is ready instantly.

03

Paste into Chalk (Direct BYOK)

Copy your key string (starting with AIzaSy...) and paste it into Chalk. You are ready to synthesize live notes!

Ready to generate your free Gemini API key?
Takes under 30 seconds. Zero cost, no credit card or billing details required.
Open Google AI Studio ↗
DOWNLOAD

Chalk for your Desktop

Select your operating system and start in seconds.

MACOS BUNDLE Apple Silicon (M1/M2/M3/M4) & Intel

Chalk for Mac

Standalone application requiring zero setup. Runs discreetly in the menu bar and toggles instantly with Alt+Space.

Download for macOS (Apple Silicon)
macOS 13+ (Ventura, Sonoma, Sequoia)
macOS Security Note (Gatekeeper):
If macOS warns about an unverified developer, right-click Chalk.app → Open, or run xattr -cr Chalk.app in Terminal.
WINDOWS SETUP 64-Bit Installer (x64)

Chalk for Windows

Fully integrated into the Windows system tray with native WASAPI audio loopback and secure Windows DPAPI credential vault.

Download for Windows (x64)
Windows 10 / 11 64-Bit
Windows Security Note (SmartScreen):
If Windows SmartScreen displays a warning, click "More info" → "Run anyway".
Optional for developers (Terminal Quick-Install):
macOS macOS Terminal
$ curl -L -O https://github.com/getchalk/chalk/releases/latest/download/Chalk-macOS.zip && unzip -q Chalk-macOS.zip && xattr -cr Chalk.app && open Chalk.app
Windows Windows PowerShell / CMD
> curl -L -O https://github.com/getchalk/chalk/releases/latest/download/Chalk-Setup.exe