LEANSpark is the decision layer for founders. It remembers every assumption, experiment, and result — and warns you the moment your plan and your evidence stop agreeing.
Free to start — no credit card required.
Runs on Lean Canvas and the Continuous Innovation Framework — the methodology over 1 million founders already trust.
“I spent eight months building. Then I talked to customers.”
“Everyone I asked loved it. Nobody bought it.”
“Every AI chat starts from zero. Nothing remembers what I already learned.”
A startup isn't a product. It's a portfolio of assumptions.
Most of them are wrong — and the costly ones hide behind enthusiasm. LEANSpark manages the portfolio: it tracks what you believe, what you've tested, and what the evidence actually says.
The loop that compounds
Every cycle updates the portfolio. Nothing you learn is ever lost.
Not faster artifacts. A system that gets you less wrong over time.
Your business model, every interview, every experiment and result — held in one persistent memory that compounds instead of resetting each session.
As evidence stacks up, LEANSpark flags when your plan and your data disagree — before you burn another quarter optimizing the wrong thing.
Not another to-do list. A clear recommendation — persevere, pivot, or pause — grounded in what your evidence actually shows.
Contradiction engine
Your positioning is optimizing the wrong variable. Reposition around trust and proof, not speed.
Generating another canvas is cheap. Knowing the canvas is wrong is the whole game.
From the founders
It showed me my real customers and how to identify my early adopters what was a game changer for me
For me leanspark was the light at the end of the tunnel . For years, I was just studying frameworks, lost on where to start or what to focus on. But leanspark gave me a crystal-clear vision of the priorities I needed to tackle step by step.
Helps to focus the business model development.
This application evaluates and challenges ideas and strategies for business model development.
it is an amazing tool. Spark is the mentor I needed to move on with my project. I did in weeks something that I would take months to do on my own.
I always had a business idea but I really did not know how to turn it into a real business. Trainings were made, books were read but the point for me was: "ok! how do I do it? how do I begin?". My turning point was last years when I was introduced to "Running Lean" book. That book answered me many questions I had about the process. With it, I started the ideation and validation process, just the book and I. However, doing the process on my own was taking too much time and also, I was not sure if I was doing everything as expected. Last February, I saw an Ash's video on Youtube about the LeanSpark release and I immediately accessed it just to check if it was just another gen-AI tool. After my 3 question, I saw the benefits of using the tool. LeanSpark is my mentor, the one who is always available to talk to me and show me the path. I was able to reduce the time I would spent by myself and today, 50 days after my first prompt in the tool, I was able to validate the problem the solution, there are already 2 paid customers while I built the MVP. I could not do all of this without the book and LeanSparks. Thank you, Ash!
Under the hood
The Lean Canvas, a 7-dimension stress test, and 90-day Plan–Do–Check–Act cycles — the same methodology that's guided over a million founders. It's the engine, not the pitch.
See the methodology →The bigger picture
The Creator Economy turned audiences into income. The Founder Economy turns domain expertise into companies. LEANSpark is the system of record for the decisions that build them.
Read the essay →No. A chat starts from zero every time. LEANSpark keeps a persistent memory of your business model, your interviews, and every experiment — so its guidance compounds instead of resetting. The memory is the point.
As evidence accumulates, LEANSpark flags when your plan and your evidence stop agreeing — e.g. your positioning sells speed, but your interviews say trust and your lost deals say security. It surfaces the conflict before you spend another quarter optimizing the wrong variable.
No. The methodology runs under the hood. You bring the idea and the customer conversations; LEANSpark handles the framework, explains each step in plain language, and turns it into decisions.
Life's too short to build something nobody wants.
— Ash Maurya, creator of Lean Canvas
Start freeBuild on evidence, not hope. No credit card — cancel anytime.
