MathematiX
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MathematiX Mobile

The same notebook, on your phone. Burst the board, record the hour, drop in the slides — and the written-up note is waiting on your desktop canvas by the time you get to it.

Chat with Lemma now… Watch a capture run
The mobile app

The whole app, in your pocket

Capture the lecture while it is happening, turn it into a finished note, then pick up on your desktop canvas without losing your place.

01Your library

Five taps, start to finish

Capture anywhere. Polish on desktop.

Let it run, or click any step to jump straight to that screen. The whole thing takes about as long as walking to the door.

  1. 01 Your classes, syncedEvery notebook from the desktop canvas, already there.
  2. 02 Photo, PDF & voice captureSnap the board, import slides, record the lecture.
  3. 03 Ask Lemma in contextIt sees the photo and the note you are in before answering.
  4. 04 Worked, then self-reviewedLemma checks its own steps before handing them over.
  5. 05 A real note, synced backWaiting on your desktop canvas before you get home.

Offline capture, sync later. Basement lecture hall? Capture now — it uploads the moment you reconnect.

Open it on your phone
How it works

From lecture to understanding in three steps

Capture the source, shape the idea, then ask for help without leaving your notebook.

01

Capture your notes

Drop in a lecture PDF, photo, or recording. Ask Lemma for a summary, and structured notes land on your canvas.

02

Work visually on the canvas

Add equations, graphs, and tables, then drag them into a layout that makes the whole idea click.

03

Ask AI to explain or solve

Select any step and ask Lemma to explain, solve, or check it. The verified result goes straight back onto your canvas.

Lemma AI

The assistant that reads the page you're on

No copy-paste, no second tab. Lemma reads the note you already have open and writes its answer straight onto the canvas as blocks you can keep editing.

It writes blocks, not paragraphs

The answer arrives as real canvas objects: a text box, typeset maths, a plotted graph, a table, or a code cell. Placed, aligned, and yours to edit.

It comes to class with you

Photograph the board or record the hour. Lemma transcribes it, writes structured notes, and has them waiting on your desktop canvas.

It finds the first wrong step

Photograph your working, or point at it on the canvas. Lemma marks the line where it breaks and names the rule you skipped.

limx→2  (x² − 4) / (x − 2)  =  2

It quizzes you on your own notes

Type /quiz and the lecture you just wrote becomes recall practice with answers hidden. Tap one to try it.

The characteristic polynomial. Its roots are the eigenvalues of A.
Exactly when it has n independent eigenvectors, enough to form a basis.
Review mode · 48 graded trials

It checks its own work before you see it

Every answer is solved a second time from the original question by a model that never saw the first draft. If the two disagree, a third solve settles it.

Review off Review on
Overall pass▲ +35.4 ptsEvery check on a trial passing at once
37.5%
72.9%
Maths correct▲ +8.3 ptsThe numbers and the working are right
68.8%
77.1%
Layout usable▲ +37.5 ptsFits the canvas and reads in order
60.4%
97.9%
Did what was asked▲ +10.4 ptsThe request itself was carried out
87.5%
97.9%
Formatting clean▲ +37.5 ptsNo stray markdown, no broken LaTeX in a box
10.4%
47.9%
The same model on the same 48 trials, graded once by one grader. The only difference between the two rows is whether review ran first.
Go deeper on Lemma AI How review works · how it was graded · every capability
The building blocks

Every format your coursework needs

One notebook for the words, working, data, and diagrams that belong together.

View more

Infinite canvas

Pan and zoom across an endless workspace. Group a whole course, then collapse it to a single tidy note.

Text & math notes

Write prose and drop into LaTeX-quality equations inline, beautifully typeset and ready to edit.

Graphs & plots

Plot functions, data, and vectors in 2D. Adjust parameters and watch the curve update live.

3D surface plots

Render interactive surfaces and parametric curves. Rotate, zoom, and explore z = f(x, y) live.

Code blocks

Runnable, syntax-highlighted Python, JavaScript, and more, right beside your derivations.

Tables

Structured data with units, computed columns, and quick conversions for lab work and datasets.

Chemistry structures

Type a SMILES string and get a clean 2D molecular structure with rings, bonds, and functional groups.

Diagrams & flowcharts

Describe a flowchart, sequence, or UML diagram in plain text and watch it render with Mermaid.

Drawing & sketches

Sketch free-body diagrams, circuits, and annotations freehand with stabilization and snap-to-grid guides.

Plans

Start free in beta

Built for students first. Pick a plan now, change anytime.

Free during beta

Beta Access

Everything, free while we are in beta.

Free
  • Full notebook & infinite canvas
  • Fast · Adaptive · Max AI modes
  • Lemma AI edits your canvas
  • AI self-checks its work
  • PDF & LaTeX export · mobile sync
Join the beta

Starter

For everyday coursework.

$5/mo

  • Unlimited notebooks & canvas
  • Extended AI usage
  • Fast · Adaptive · Max modes
  • AI self-checks its work
  • PDF & LaTeX export
Choose Starter
Most popular

Pro Scholar

For serious STEM majors.

$15/mo

  • Everything in Starter, plus:
  • High-volume AI usage
  • Lemma AI edits your canvas
  • Six self-check passes
  • Study review & quiz generation
  • Priority sync & support
Choose Pro Scholar

Academic Team

Labs, departments & classes.

$25/mo

  • Everything in Pro Scholar, plus:
  • Maximum AI usage
  • Eight self-check passes
  • Shared notebooks & spaces
  • Admin console & SSO
  • Campus licensing
Talk to us

Need the full breakdown? Compare all plans