Design a mobile app for seniors to manage their medications

What They’re Really Asking

Can you balance accessibility, simplicity, and safety in a high-stakes design for a vulnerable user group under real-world constraints?

Strong Sample Answer

I'd start with the Double Diamond framework. In Discover, I'd conduct in-depth interviews with seniors and their caregivers, plus contextual inquiries in their homes. I'd use a diary study over two weeks to understand medication routines and pain points. Tools like UserTesting would help remote observation. Findings often reveal issues like small text, confusing pill shapes, and forgetfulness. In Define, I'd synthesize insights into a problem statement: 'How might we empower seniors to take the right dose at the right time, without anxiety or reliance on caregivers?' Persona is Evelyn, 78, with mild arthritis and low tech confidence. In Develop, I'd facilitate co-creation sessions with seniors in Figma, iterating on low-fidelity wireframes. Key features: large buttons (minimum 48dp), high contrast colors, voice input for medication list, and a simple 'check-in' reminder that says 'Evelyn, take your blood pressure pill now?' In Deliver, I'd run A/B tests on navigation patterns—tab bar vs. gesture-based. I'd prototype in Figma and test with 10 seniors using UserTesting, measuring success rate for scheduling a dose. I'd iterate based on feedback: many struggled with swipe gestures, so we moved to tap and hold. Final outcome: a 95% task completion rate in usability tests, with caregivers reporting reduced worry. I'd also incorporate accessibility patterns from Google's Material Design and Apple's HIG, ensuring compliance with WCAG 2.2 AA. The app would sync with pharmacy systems, sending alerts if a dose is missed, and include offline mode for rural areas. I'd measure success through retention: 70% daily active use after 30 days, and a Net Promoter Score of +40 among seniors.

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