Castor Blog

Sword Health didn’t follow the typical digital health playbook. Instead of rushing to market, they invested early in clinical validation—running RCTs, embedding validated outcomes in their product, and using Castor to power scalable data collection. With over 30 publications and 200K+ patient records, Sword built an evidence engine that enabled payer trust, rapid growth, and sustained impact. This article breaks down the strategic decisions behind their success—based on a live conversation with Sword’s CMO, Fernando Correia, and Castor CEO Derk Arts.

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