Most subscription apps fail not because of bad code — but because the numbers never worked to begin with. The Meshlabs Revenue Calculator helps founders, indie hackers, and SaaS builders validate their subscription model in minutes. Plug in your price, CPI, and funnel conversion rates to instantly see your projected revenue, profit, ARPU, ARPPU, and user acquisition cost. No sign-up. No fluff. Just honest numbers — before you write a single line of code.