Study & teaching
Turn a lecture into a study project.
Record the explanation, annotate the course PDF and organize each topic in a Study Project. Use a Whiteboard to connect the material.

Notes Writer
Handwriting, PDFs, Word, voice notes, LaTeX and Python. Study, research and write in one app on iPad, iPhone and Mac.
Put the tools to work
Move between formats as the task develops. Keep the recording, the reference and the document together.
Study & teaching
Record the explanation, annotate the course PDF and organize each topic in a Study Project. Use a Whiteboard to connect the material.
Research & technical work
Work through a model in Python, compare results in a Chart document and compile the equations and explanation into a LaTeX paper.
Writing & professional work
Keep interview recordings beside reference documents. Structure the draft in an Outline, arrange sections on the Corkboard and compile the work.
Find your tools
Write naturally
Precise tools. Effortless expression. Write by hand, sketch a diagram and annotate a page with a full set of pens, pencils, markers and brushes.
A natural writing experience
From lecture notes to
your next technical sketch.
Pens, pencils, fountain pens, markers and watercolor tools. Choose the right ink for the task.
Use the eraser, lasso and ruler. Add shapes, text and images alongside your handwriting.
Move between handwritten notes, reference material and formatted documents in one workspace.
PDF annotation
Make your reading active. Highlight the essential, add your comments and keep the context. From scientific papers to professional reports.
Highlights, ink, comments, shapes and attachments. Keep the explanation beside the material you’re studying.
Fill forms, add signatures, organize pages and apply text redactions in supported PDFs.
Voice recording notes
Record a lecture, interview or meeting. Then turn the important moments into searchable notes while the original recording stays close at hand.
Sample walkthrough
Universe Lecture · sample recording
Documents
DOCX / Microsoft Word, PDF, RTF, Markdown, LaTeX and plain text. Dedicated editors for quick notes, structured writing and polished documents.
Create and edit DOCX documents, format your text and bring images into your writing.
PDF note · Example page

Sketch the big picture first. Then type the details right below it, on the same page.
Key idea!
Type formatted text directly on your PDF and notebook pages. It flows onto a new page as you write, and your handwriting stays right beside it.
Rich text · Example document
Make the key point clear. Add headings, emphasis, lists and images to give your document a natural rhythm.
Good notes keep the details.
Great structure makes them useful.
Combine rich text, inline images and equations with a paginated writing experience.
Format notes and longer documents with the flexibility of a dedicated rich text editor.
Markdown · Example source
# Field research ## Session notes Keep the source **clear and portable**. - Record observations - Link reference material - Review the findings > A concise summary, ready to share. ### Next steps 1. Compare the results 2. Prepare the report
Write in Markdown or MultiMarkdown with preview and rendered export.
LaTeX · Example source
\documentclass[11pt]{article}
\usepackage{amsmath}
\begin{document}
\section*{Damped Oscillations}
\subsection*{1. The model}
We model displacement as a sinusoid
with a decaying envelope:
\begin{equation}
x(t)=3e^{-0.15t}\cos(2t)
\end{equation}
\end{document}Start from a template, write the source and compile a typeset PDF, with a preview beside your code. See it compile
Plain text · Example document
A meeting outline. A short brief. A paragraph you want to return to.
Keep the words simple and the file portable. Plain text documents sit alongside every other format in your library.
A familiar space for focused writing and lightweight notes.
Study Projects & long-form writing
A tree-like structure for a whole course, a research paper or a book. Organize in the Binder. Plan on the Corkboard. Compile the finished work.
A study project · illustrated structure
Organize subjects, chapters, lecture notes and reference material in nested branches. Keep research beside your draft and save snapshots as the work develops.
Review project documents on the Corkboard. Work with cards and synopses to plan the flow of a paper, a course or a longer manuscript.
Compile selected sections into a finished document or ebook. Choose the format and compile settings that suit your project.
A clear structure for longer notes
Structure longer notes with nested branches, rich text and images. Collapse sections and import or export OPML.
From the sample library
A six-episode series, organized from the season plan down to individual interview questions. Follow the research, episode structure and production schedule in one outline.
Whiteboard documents
Arrange notes, reference images, recordings and tables on one open canvas. Whiteboard documents give a complex subject room to grow without losing the thread.
01 · Connected notes
Capture definitions, observations and conclusions on the same open surface.
02 · Comparison table
Compare properties and findings without losing the notes that give them context.
03 · Hand-drawn relationships
Use curves and connectors to turn a collection of notes into a readable study map.
AI assistant & chat
Explore a subject. Ask a follow-up. Work through the material you’re studying with the AI assistant, right beside your document.
Ask questions, use attachments, rewrite a passage, summarize, translate, or refine grammar and tone. Keep control of what goes into your documents.
You
Can you explain the difference between the observable universe and the entire universe?
Notes Writer assistant
The observable universe is the region whose light has had time to reach us. Because light travels at a finite speed and the universe is about 13.8 billion years old, we can observe only part of what may exist.
The entire universe includes regions beyond that horizon, but its total size is still unknown.
You
How do we know the universe is expanding?
Notes Writer assistant
Astronomers measure a systematic redshift in light from distant galaxies. As space expands, that light is stretched toward longer, redder wavelengths.
In general, more distant galaxies show larger recession rates. This describes the expansion of space itself; bound systems such as the Milky Way do not simply fly apart.
You
Why does looking far away mean looking back in time?
Notes Writer assistant
Light takes time to travel. Sunlight reaches Earth in about eight minutes, so we see the Sun as it was eight minutes ago. Light from distant galaxies can travel for billions of years before reaching us.
A telescope therefore reveals different chapters of cosmic history. Nearby objects appear as they were relatively recently; very distant galaxies show us a much younger universe. Looking farther out lets astronomers study how galaxies formed and changed over time.
You
Give me a quick summary for my notes.
Notes Writer assistant
Math, science & technical writing
From a calculation to a compiled paper. Math Notebooks, Python, Chart documents and LaTeX give technical work a natural home.
Math Notebooks + Python
Combine explanations, symbolic calculations and executable Python cells in a real Math Notebook. Differentiate a model, evaluate an integral and plot the results — all beside your notes.
Python + SymPy · Damped oscillations
from sympy import ( symbols, exp, cos, diff, integrate, pi ) t = symbols('t', real=True) x = 3 * exp(-3*t/20) * cos(2*t) velocity = diff(x, t) area = integrate(x**2, (t, 0, pi)) area.evalf(6)
From the model to the result
Displacement
x(t) = 3e−0.15t cos(2t)
Symbolic derivative
x′(t) = −e−0.15t
[6 sin(2t) + 0.45 cos(2t)]
Squared displacement, integrated
LaTeX documents & compilation
Write the source, compile the document and keep the typeset page beside your working notes. The complete path stays visible while a research argument becomes a finished paper.
Sample walkthrough
Oscillation Study.tex · compiled in Notes Writer
Chart documents
Build a standalone Chart document with an editable data table. Compare multiple series, combine columns and lines, and give every chart the right titles, colors and labels.
Inside this document
Twelve months of solar and wind generation, with a demand line across the year. See seasonal changes and compare the figures in the table below the chart.
Choose column, line, area, pie, scatter, histogram and more. Style your chart, then export an image or PDF — or share the editable Chart document.
Math Notebooks also support inline Python plots with mathnotes.plot(x, y).
Technical PDFs
Set the scale, then measure distance, perimeter and area on technical PDFs. Add ink, text and shapes with the same tools you use for your notes.
Organize & share
Notebooks, folders and recognizable covers. Keep a semester, a working library or years of research easy to navigate.
Notebooks & folders
Create folders and subfolders, scan documents and search your collection. Keep related work together, whatever its format.
Multitasking
Read and write side by side or top to bottom. Resize your workspace and switch between open documents with tabs.
Templates & paper patterns
Ruled, squared, dotted, circular and polar. Music paper, calendars, planners and journals. Choose a template, customize it or add your own.
Share & export
Access iCloud and compatible providers such as Dropbox, OneDrive and Google Drive. Share or export your document in the format the next step needs.
Available export options depend on the document type.
Privacy
Help protect work in progress and recover documents.
Keep an additional safeguard for your notes and files.
Add a layer of privacy to the app and your folders.
Handwritten notes, PDFs, voice recording notes, DOCX / Microsoft Word, RTF, Markdown and plain text documents. You can also work with Whiteboards, Outline Notes, Math Notebooks, Chart documents, LaTeX documents and tree-like Study Projects.
Math Notebooks support Python cells alongside explanations and calculations, including chart output with mathnotes.plot(x, y). LaTeX documents can be compiled to PDF, with a preview beside the source.
Organize subjects, lectures, sources and drafts in a tree-like Binder. Plan on the Corkboard, keep research beside your writing, save snapshots and compile selected sections into a finished document or ebook.
Yes. Record and replay voice notes, generate transcripts and add recordings to PDFs or Whiteboards. AI writing tools and the assistant chat help with summarizing, rewriting, translation and more. AI Assistant is optional and requires an internet connection; included usage depends on your plan.
Notes Writer is free to download, with optional in-app purchases for Pro and AI-inclusive options. The App Store lists current purchases, pricing and regional availability. AI usage depends on your plan and requires an internet connection.
Notes Writer is available for iPad, iPhone and Apple silicon Mac, with iOS 27 support. On Mac, it runs the iPad app and requires macOS 13.3 or later and an Apple M1 chip or later. Check the App Store for the latest release and device requirements.
Notes Writer
Free to download, with optional upgrades.
Scan to download on iPad or iPhone
Free download with optional in-app purchases. Pro, Lifetime Pro and AI-inclusive options are available. Check the App Store for the options in your region.
The optional AI Assistant supports chat, summaries, rewriting and document help. An internet connection is required. Included usage depends on your plan.
Use the iPad app on a Mac with macOS 13.3 or later and an Apple M1 chip or later. View Mac requirements.