About The Lean Stack
The Lean Stack exists because building an online business shouldn't require a spreadsheet of five different software subscriptions before you've made a single sale. We're a small team that got tired of watching people overpay for overlapping tools, so we built the resource we wished existed: free calculators to see your real costs, honest reviews of the tools involved, and practical guides on the fundamentals that actually move the needle.
What we do is straightforward. The free calculators help you see what a funnel, email list, or full stack actually costs. The reviews and comparisons are written from actually using the tools, not from an affiliate dashboard. The guides cover the strategy software alone won't teach you.
We should also be upfront about how this site makes money: some of the links here, including links to Systeme.io, are affiliate links, which means we may earn a commission if you sign up through them, at no extra cost to you. That relationship never changes what we recommend or how we describe a tool's downsides. Read the full affiliate disclosure for details.
Questions, feedback, or a correction to something we got wrong? Get in touch.