Lean Canvas Maker

A Lean Canvas is a one-page plan for an early-stage business. It adapts the Business Model Canvas for start-ups that are still searching for a model, replacing partners, activities, resources and relationships with the boxes that matter most before you have customers: the problem, the solution, the metrics and the advantage. Ash Maurya popularised the version used here. This maker lays it out and exports it.

The nine boxes

Problem lists the top one to three problems of your customers. Customer segments names who has them. The unique value proposition is a single, clear, compelling message about why you are different and worth attention. Solution lists the top three features. Channels is the path to customers. Revenue streams and cost structure describe the money. Key metrics are the numbers that show whether the business is working. Unfair advantage is something that cannot easily be copied or bought.

Extra context for the boxes

Three optional inputs add context. “Existing alternatives” lists how people solve the problem today, and is printed under the problem heading. “Early adopters” says who will buy first, and is printed under the customer segments heading. “High-level concept” is a short analogy such as “Autopilot for freelance invoicing”, printed under the unique value proposition. These do not take up space in the grid, but they show the thinking behind the boxes.

The layout and the files

The board uses the familiar arrangement on a 10-column grid: problem on the left spanning two rows, solution above key metrics, the unique value proposition in the middle, unfair advantage above channels, customer segments on the right spanning two rows, and cost structure and revenue streams along the bottom. The preview, the PNG image and the landscape PDF all match, and text and Markdown copies are available for a document.

A worked example

The sample is PlanPal, an invoicing app for freelancers, dated 10 November 2026. The problems are that freelancers wait a month or more to be paid, that invoices and reminders take hours each month, and that chasing clients is awkward, with spreadsheets and company accounting software as the existing alternatives. The customers are freelance designers, developers and writers, and the early adopters are freelancers who invoice five or more clients a month. The value proposition is “Get paid on time without writing a single reminder”, the concept “Autopilot for freelance invoicing”, and the solution one-click invoices, automatic polite reminders and a payment link on every invoice. Channels are freelancer communities, content about getting paid and referrals. Revenue is a monthly subscription plus a small fee on payments collected, costs are developers, payment processing fees and cloud hosting, and metrics are days to payment, invoices sent per user and monthly paying users. The unfair advantage is payment-timing data from thousands of invoices.

Using it well

Start with the problem and the customer, and test those with interviews before you spend time on the rest. Make the value proposition specific enough that a customer could repeat it. Choose metrics that measure behaviour, not vanity. Mark the riskiest assumption and run the smallest experiment that could prove it wrong. Keep earlier versions so that you can see how the plan changed.

Limits

A canvas is a hypothesis, not evidence. The tool does not test your assumptions, calculate unit economics or judge the market. It is drawn in your browser from the text you type, and nothing is uploaded. Treat it as the start of a conversation with customers.

Related tools

• Business Model Canvas Maker is the fuller version once the model starts to settle.
• Value Proposition Canvas Builder examines the fit between problem and solution in more depth.
• Startup Idea Validator scores the idea and works out lifetime value against acquisition cost.
• SWOT Analysis Maker gives an outside-in view of the idea.