Case Study: ThirdLove achieves 250% mobile conversion lift and faster, self-service analytics with Heap

ThirdLove is a fast-growing e-commerce brand founded with a mission to create a better bra for women

ThirdLove is a fast-growing direct-to-consumer bra brand founded to deliver better-fitting bras using patented design and a Fit Finder quiz. As the company scaled, its analytics were fragmented and slow—Google Analytics couldn’t support ad-hoc questions or cross-team access, and engineering overhead for tracking limited the team’s ability to iterate on product and marketing experiments.

ThirdLove implemented Heap for seamless, comprehensive event tracking and used Heap Connect to centralize data in their warehouse and Looker. That enabled faster A/B testing and cross-device analysis, saving 15–20% in engineering time, increasing Fit Finder completion by more than 6%, and driving a 250% uplift in mobile conversion while democratizing data access across the organization.

ThirdLove

Amanda Rosenberg

Head of Marketing Analytics