Health App Design

Case study · OneBody

How do you design a health app people keep opening?

OneBody treats weight and mental health together and keeps patients connected to their own doctors. We designed the mobile experience from paper sketches to a linked prototype and brand system.

OneBody homepage: a breakthrough platform for whole person health transformation, asking what type of care you are here for

Client

OneBody

Industry

Health and wellness

Location

[confirm]

Services

App UX and UI design, Clickable prototype, Design system, Brand identity, Motion graphics

Outcome hub

Bring customers back

The problem

Two conditions that go together, and apps that treat only one

Weight and mental health often go hand in hand, but most digital health apps treat only one. Patients face apps that promise a lot with little clinical support, and doctors have few programs they trust enough to recommend. OneBody needed one app that felt personal and calm, and connected people to a real clinician at the right moment.

What we did

Three decisions that made the app easier to use

Intake screens: type of care, how are you feeling, main concerns, personal plan

1. Intake that starts with feelings

The first question is "What type of care are you here for?" with weight, mental well-being, both, or help me decide. The next asks "How are you feeling today?" and the answers build a personal plan.

Key takeaway: Your first question decides who stays.

Home screens with featured lessons, goals and activity logging

2. A home screen that coaches, not nags

Home leads with lessons picked from the patient's profile, simple progress bars, the next appointment and one Log activity button for food, water, meds, mood, sleep, exercise and weight.

Key takeaway: One clear main button beats a menu of options.

Mood-based support, therapist search and therapist profile

3. Support that scales with mood

A good day gets a simple celebration. "Stressed" or "Struggling" offers an appointment, self-help tools or other resources, and booking surfaces matching therapists nearby.

Key takeaway: Match the help to the moment.

Also in this project: a coach chat, peer community, connected devices and monthly video visits; a butterfly-person logo and hourglass photo frames used across the app, website and pitch.

Inside the project

Brand cover, paper sketches, prototype map, community and coaching screens, colors and type, hourglass photo treatments.

What changed

Before and after, in plain terms

Leadership and clinical advisors could tap through real patient scenarios instead of reading a spec, and the work helped win executive approval to fund the product.

Related services

Key takeaway for any business: People come back to products that connect them to people.

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