Case Study: Project Rōnin achieves reliable symptom tracking and improved clinician–patient communication with OneSignal

Project Rōnin Uses OneSignal to Help Revolutionize Cancer Treatment

Project Rōnin is a cancer intelligence suite that combines clinician dashboards and a patient mobile app to capture symptoms and EMR data to personalize oncology care. Facing fragmented health records, chemo-related memory lapses, and strict HIPAA constraints, Project Rōnin needed a highly reliable, API-driven messaging provider to drive regular symptom reporting and coordinate clinician–patient communication, so they turned to OneSignal for push notifications and in‑app messaging (with segmentation, tag substitution, and A/B testing).

OneSignal implemented reliable mobile push and in‑app messaging, robust API support, and A/B testing to optimize message wording; this enabled Project Rōnin to scale messaging without outages and achieve reaction rates upward of 40% (over 30% above average). The solution improved symptom reporting, patient engagement and app retention, supported personalized patient education and triage workflows to help reduce unnecessary ER visits, and provided a foundation for future in‑app surveys and further personalization.

Project Rōnin

Charlie Kottler

Product Manager