Step 1
Start with the question.
A project budget you can read, change, and explain.
Basic calculations · synthetic example
A practical product tour
Plain-text notes, live calculations, and visual models
Write readable calculations, change an assumption, and see results update. Free basics need no account and never expire in one scratchpad. Continuum Pro adds multiple documents, shared variables, shipped templates and visual tools across web and desktop, with native Pocket Scribe and local MCP on desktop. Start a 14-day trial explicitly with verified email, without a card, when trials open. One purchase covers web and three desktop activations. Documents stay local; see the offer page for checkout availability.
Start with free calculations →Real product interfaces with synthetic demonstration data. A captioned walkthrough of captured states; capabilities and edition requirements are labeled.
Watch the portrait version
Step 2
Change one assumption.
12 days → 15 days. The fee and remaining budget update.
Hypothetical example · taxes and other costs excluded
Step 3
Give the answer context.
Compose the numbers into a readable decision summary.
Pro on web and desktop · editable source stays authoritative
Step 4
Keep the reasoning nearby.
Connect assumptions, evidence, and the next step on Canvas.
Pro Canvas · synthetic workspace
Step 5
Review what the AI proposes.
Inspect the source diff and preview before applying a change.
Pro desktop local MCP · deterministic proposal fixture
Step 6
Begin with one useful model.
Start with free calculations. Discover Pro when your work grows.
One free scratchpad · one Pro purchase for web and desktop