Lebesgue is a marketing analytics platform built for eCommerce brands that combines ad-spend auditing, attribution, and customer lifetime value analysis in one dashboard. Founded in 2020 by Josip Begić, a former head of growth who managed over $50 million in ad spend for YC-backed stores, the Croatian-founded, US-headquartered company built Lebesgue to catch higher-priced ad-campaign errors that manual reporting tends to miss.
The platform automatically audits ad campaigns using a brand's first-party data, tracks competitor marketing moves, and models customer lifetime value by acquisition channel, with its AI trained on more than $50 billion in cumulative ad spend across customers. A newer AI assistant, Henri, layers conversational analysis on top of the same underlying data.
Lebesgue fits eCommerce marketing teams and agencies that need channel-level attribution and LTV analysis without building a custom data warehouse. The Basic plan is free, Advanced costs $59 a month, and Ultimate costs $79 a month, with a 30 percent discount for annual billing across paid tiers.
