Jack Sweeney

Co-founder of Coherence who led content creation and marketing for their breathwork app, helping validate the product through viral content and organic distribution.

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Dec 16, 2025 • 14min

How We Built It: $85K Mobile App | Starter Story

Jack Sweeney and Nick Sweeney, brothers and co-founders of Coherence, dive into their journey of creating a successful breathwork app that has generated $85K. They share insights on their content-first strategy that validated their app through viral moments, including a video with 8M views. The duo discusses their complementary skills, with Jack focusing on marketing and Nick bringing breathwork expertise. They reveal their tech stack and practical advice for fellow sibling entrepreneurs looking to thrive in the startup world.

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