Think on paper.
Solve it on the same page.
Noterat brings handwritten notes, technical drawings and real calculations together — for engineers, students, and anyone who thinks with a pencil.
One workspace
The thinking and the answer, side by side.
Keep your reasoning next to your sketches and results, from the first idea to the finished solution.
Handwriting
Think in ink.
Write and sketch naturally with Apple Pencil. Pens, highlighters, shapes and text — and a strip of tape to hide a line until you're ready to see it.
- Scribble over ink to erase it, in one undo step
- Shapes snap straight; right triangles snap to exactly 90°
- Import PDFs to annotate, add images, organise into notebooks
Calculation
Solve with SymPy.
A full symbolic maths engine lives right on the page. Solve equations, integrate, differentiate, work with matrices and plot functions — all on your device, no connection needed.
- Real units:
2[m] + 30[cm],convert(10[m/s], [km/h]) - Exact expressions or numerical results
- Copy cells out as LaTeX, with their answers
Drawing
Draw with precision.
Create, import, edit and export 2D CAD drawings in DXF. Work with coordinates, snapping and layers, then place the drawing in your notes at the scale you choose.
- Open and export DXF for use in other CAD software
- Lasso a closed profile and extrude it into 3D
- Dimensions in the ruler's unit, at the ink's scale
And the rest
Made for the way you actually work.
Tabs and split view
Open notebooks, Markdown notes and drawings in tabs, and put two side by side on iPad.
Search your handwriting
Find anything across handwriting, typed text and imported content.
Page headers and courses
A header with your name, the date and the course code repeats on every page and exports as real text.
Colour and fill
Palette presets or your own, an eyedropper, and drag-to-fill for any closed area.
iCloud sync
Turn it on and your notes follow you between iPhone and iPad — through your own private iCloud.
Your files, open formats
Export notebooks as PDF, drawings as DXF, and keep notes as plain Markdown. Nothing is locked in.
Privacy
Your notes are yours.
Noterat has no account, no server of ours and nothing watching what you write. Your notebooks live on your device, and if you turn on sync, in your own iCloud.
- No accountOpen the app and start writing.
- No ads, analytics or trackingNot a single third-party SDK for any of it.
- Works offlineEven the calculations run on your device.
Give your ideas room to take shape.
Free on the App Store for iPhone and iPad.
Download on the App Store