Case Study: Passion Factory achieves 100x MAU growth and 250% higher 4‑week retention with Mixpanel

Passion Factory, the creator of Korea’s highly popular health and wellness app, Balance Friends, uses Mixpanel to find product-market fit and drive exponential growth

Passion Factory, a Seoul-based startup behind Balance Friends, launched a chatbot-driven health and wellness app to help Korean women lose weight with personalized, conversational coaching. Entering a crowded fitness market, the team needed rapid, data-driven answers about product-market fit, user segmentation, drop-off points in chatbot flows, and retention—without heavy engineering overhead.

Using Mixpanel’s self-serve analytics, Passion Factory ran funnels, cohorts, flow analyses and A/B tests to optimize chatbot dialogues, personalize push messages, and track attribution from Branch. The work validated product-market fit within a year, drove a 250% increase in 4-week retention, fueled exponential user growth (100x increase in users and over 500,000 downloads), and helped Balance Friends become a top-ranked diet app and Google Play award winner.

Passion Factory

Jeonghoon Lee

CEO and Co-Founder