MDR-compliant mobile Health App for a medicinal cannabis inhaler
Position and contributions
As Usability Engineering Lead and Art Director, I ensured the product was grounded in patient-centric principles. I led a contextual research program that, despite the challenge of initial patient mistrust, brought our multidisciplinary team into direct dialogue with individuals undergoing cannabis treatment in Germany - uncovering unmet needs, correcting initial assumptions, and shaping the requirements analysis. These findings informed both our design strategy and the UX/UI direction, which I oversaw. This approach ensured the final solution aligned closely with patient needs while meeting clinical and regulatory expectations.
Onboarding process
Belfry Medical Companion Dashboard
Treatment overview
Inhalation assistant
Treatment Check-Up
Key Details & Numbers
Project duration
4 months
Creative Team led
4 designers / researchers
Process & Methods
Stakeholder-Requirements Workshop
With company directors from varied business backgrounds, we clarified the clinical context and defined the core patient-centered problem, ensuring the team could think beyond purely commercial goals.
Stakeholder-Persona Workshop
We co-created realistic patient personas from different user groups to help a business-focused team design with genuine empathy.
Stakeholder-Product-Vision Workshop
Together, we envisioned the app as a trusted therapy companion, balancing business ambitions with empathy, clarity, and compliance.
Synthetic Interviews
AI-assisted interviews helped us validate early hypotheses and shape the discussion guides for contextual interviews, ensuring sensitive and relevant patient conversations.
Contextual Interviews
Revealed unmet needs, in particular the lack of support during the reimbursement process for patients with statutory health insurance, along with gaps in symptom tracking, progress visibility, and timely reminders. These patients are usually very emotionally affected due to the severity of their conditions, which required a sensitive and empathetic approach during interviews.
Usability testings
Usability sessions with real patients validated accessibility, tone, and workflows, adapting designs to their physical and emotional needs.
Regulatory Steps applied
Usability file documentation
(acc. to ISO 13485)
Analysis of hazardous situations
(acc. to ISO 14971)
Risk management documentation
(acc. to ISO 14971)
Establishing Usability Engineering process
(acc. to ISO 62366-1)
Contextual Interviews conducted
8x
Usability Tests conducted
10x
Research participants networks established
2x
Software Stack
Figma
Confluence
as Quality Management System
Adobe Creative Suit
After Effects, Photoshop, Illustrator
