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Launch Plan

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Features

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Pro + Cloud

Ship v1 Fridaydemo at 3pm

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Type it. It formats itself.

Plain text in, LaTeX out. Headings, boxes, color, and tables format live as you type, so a whole formula sheet writes itself onto one page.

Cover

Formula Sheet

Lecture 5

New Chapter

Formula Sheet

✦IMPORTANT MATHEMATICS FORMULAS✦

1 ALGEBRA

Quadratic Formula

2 TRIGONOMETRY

Important Values

θ	0	30	45	60	90
sin
cos
tan					∞

3 COORDINATE GEOMETRY

Distance between two points

Section Formula (internal, m:n)

Midpoint

Slope

4 CALCULUS

Derivatives

Integrals

5 MENSURATION

Rectangle

Triangle

Circle

Sphere

6 STATISTICS

Mean

Probability

Standard Deviation

xₓ = values, x̄ = mean, n = count

7 DIFFERENTIAL EQ.

General form (Linear D.E.)

Solution

8 VECTORS

Magnitude

Dot Product

Cross Product

9 MISCELLANEOUS

Arithmetic Progression (AP)

Geometric Progression (GP)

Sum of first n natural numbers

Write and draw on the same page.

Scribble a shape freehand, then hold to snap it clean. Markdown, math, checkboxes, and a hand-drawn diagram all live on the very same sheet.

Photosynthesis

Light reactions capture sunlight

Draw the Calvin cycle

Plants turn light into sugar.

Label the inputs and outputs

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

Two stages to know

1. Light reactions, in the thylakoid

2. Calvin cycle fixes CO₂ to sugar

Sunlight

CO₂

H₂O

O₂

Glucose

Quiz Friday!know both stages

Math that just works.

Type real LaTeX or plain words like "x squared minus five x plus six". Brainstorm typesets it, then solves it step by step with exact rationals, entirely on device.

Math

x squared over twoplain words → LaTeX

x^2 - 5x + 6 = 0

SolveON DEVICE

Equation

Factor

Zero rule

Answer

Equations · systems · inequalities · limits · derivatives · integrals · ODEs · series · matrices · complex numbers · statistics

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Lecture 4: Derivatives

Audio never leaves your deviceWhisper, on deviceEnglish (auto)Mic + system audio

Live transcript

00:04The derivative is the slope of the tangent line.

00:11For x squared, the slope at any point is 2x.

00:17That is the power rule. It is on the exam.

Insert as Markdown

Recording00:21

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Imported: Chapter 3

3.2 Enzymes

Enzymes are proteins that speed up chemical reactions by lowering the activation energy. Each enzyme binds its substrate at the active site.

Rate rises with temperature until the enzyme denatures, usually above 40 °C in humans.

Editable text · searchable

PDF

Chapter 3.pdf

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9:41

Jordan ›

Today 4:12 PM

hey wasn't feeling good today, can you send me the notes from class?

good luck, this one is thick

Read 4:14 PM

iMessage

Lecture 5 · Math · Brainstorm

Mathematical Physics, from Maxwell to Black Holes Lecture 5

1Maxwell's Equations

Gauss: ,

Faraday:

Light:

Why A changing B makes E, and a changing E makes B. That loop is a light wave.

Example Push a magnet through a coil and current flows. That is Faraday's law.

2Spacetime and Relativity

Interval

Light moves on the cone

Why Observers disagree on time and length, but all agree on the interval.

Example At , : a 1 s tick on the ship lasts 1.67 s for us.

3GR and Cosmology

Friedmann

Matter tells spacetime how to curve

Why The left side is geometry. The right side is energy and momentum.

Example With km/s/Mpc, a galaxy 100 Mpc away recedes at about 7,000 km/s.

4QFT and Particle Physics

Klein-Gordon, spin 0:

Dirac, spin ½:

QED

Natural units,

Why Particles are ripples in fields. Dirac's equation predicted antimatter.

Example The electron and the positron are two solutions of one Dirac field.

5Supersymmetry

Every boson gets a fermion partner, spin differs by ½

Why Partners would cancel huge quantum corrections to the Higgs mass.

Example Electron (spin ½) and selectron (spin 0). None seen at the LHC yet.

6Black Hole Dynamics

Horizon

Hawking

Entropy

Why Black holes have a temperature and an entropy, so they obey thermodynamics.

Example For the Sun km. For Earth, about 9 mm.

7Quantum Mechanics

Uncertainty

is a probability density

Why A wave cannot be sharp in position and in momentum at once.

Example An electron held in 1 nm has kg·m/s.

8The Big Picture

Classical fields, then relativity, then quantum, then QFT

Gravity and quantum theory are still not unified

Why GR is smooth geometry. QFT needs quantized fields. They break at black holes.

Example Near , Hawking radiation is where the two theories meet.

Zoom out. It all connects.

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Calc Final Map INFINITE CANVAS

Calc Final

Limits

Squeeze theorem. One-sided limits.

Derivatives

Power, product, chain rule.

Integrals

Exam Friday, 9amBring the formula sheet!

✦ FORMULA SHEET ✦

Formula Sheet, linked page

Study week

Mon

Limits review

Problem set 1

Tue

Derivatives

Chain rule drills

Wed

Integrals

Area problems

Thu

Practice exam

Review mistakes

Fri

Exam, 9am

100%

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The parts of a notebook you actually use, made native and made to fit together.

# Notesbold italic☑ task ☐ task

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def solve(x): return x ** 2

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TermValuec3e8G6.67e-11

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What is γ?

1 / √(1 − v²/c²)

Due in 3 days

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entropyLecture 5 · black hole entropy...Formula Sheet · ...

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For confidential work

Zero network? Brainstorm Private.

Air-gapped by design. For therapists, lawyers, doctors, and journalists: local-only notebooks never touch a cloud, encryption is on from the moment a notebook is created, and transcription runs on your own hardware. Not allowed to use AI tools with client data? There is no service here to send it to.

How the private setup works

Common questions

Everything worth knowing before you download.

What do I need to run it, and which devices are supported?
A Mac on macOS 14 (Sonoma) or later to start. iPhone and iPad are in development alongside the Mac, a Windows app is in development too, and Android is in the works. Every device reads and writes the exact same files.
Do my notes ever leave my device?
Not unless you choose to sync. By default everything, notes, audio, and transcription, runs on-device, there is no web view in the app, and diagnostics are off unless you opt in. The only thing that ever sends data off your device is Brainstorm Cloud sync, and it is strictly opt-in.
Where do my files live?
In a plain folder you control. Every page is a file you own, so point the folder at your own iCloud, Dropbox, OneDrive, or git repo and it works with the tools you already use. Finder and Git keep working, any page exports to PDF or prints natively, and direct Obsidian interop is on the roadmap.
How does the AI work?
There is no AI built into the app and no chatbot in your notebook. You bring your own: a free local MCP server teaches the AI you already use, like Claude, the Brainstorm notebook language, so it can read your folder and author pages for you. Remote MCP, for reaching your notes from any device, comes with Brainstorm Cloud, and your files stay yours either way.
I cannot put client data into AI tools. Can I still use transcription?
Yes. Transcription runs Whisper entirely on your device, the audio never leaves it, nothing is sent to any AI service or to us, and it works offline. For confidential work there is also Brainstorm Private, a zero-network build.
What is Brainstorm Cloud?
Optional sync. It keeps the same notebooks on your Mac, iPhone, iPad, Windows, and the web, with 30-day version history as a safety net, reminders, and remote MCP. It is strictly opt-in, local-only is always the default, and your files stay plain files in your own folder. Audio and recordings always stay on your device.
What is Brainstorm Private?
A separate Mac build for therapists, lawyers, physicians, journalists, and anyone who cannot send client data anywhere. It ships sandboxed with no network entitlement, so macOS blocks every outbound connection and your IT team can verify it. Notebooks are encrypted at rest with Touch ID, transcription runs locally, and there is no cloud or network AI. See Brainstorm for confidential work.
How much does it cost?
Brainstorm is free while it is in beta. The core app, notes, drawing, checkboxes, and local transcription, stays free forever on one device. A one-time Pro unlock ($9.99) adds flashcards, the full task screen, review mode, and premium templates and themes. Brainstorm Cloud ($4.99/month, $19/semester, or $39/year) syncs every device, keeps 30 days of version history, and includes Pro. Prices are not final yet.

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