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Sanctuary Computer

Mirror

We partnered with Mirror to design and scale their premium fitness platform, transforming the home workout experience.
Final Mirror device shown installed on a wall, displaying a workout interface.

Brief

What does a technology-enabled fitness mirror do? How does it work? How do you interact with it? How do we create content for it? No one has ever made anything like this. What should it be?

Solution

We concepted with the Mirror team to create an entirely new category in the fitness world and helped them work through everything from interaction models and product design to direction on shooting instructors for this surface. The product was eventually acquired by Lululemon for $500M.

Concepting

To kick off the project Brynn, the founder of Mirror, shared this drawing of her vision for the product. This was the very first kernel of the idea for the mirror.

We did a series of workshops to get to greater levels of fidelity on the Mirror experience. These dove into the core user principles of the product: convenience, motivation, and community. While also keeping the future technical constraints in mind.

Concepting workshop slides exploring questions like ‘how do people workout?’ and ‘what motivates people?’ in a colorful grid.
A person mid-jump in a living room workout in front of the Mirror device, which shows their reflection and live stats.
Brynn Putnam’s original hand-drawn sketch of the Mirror device concept, showing the device hung on a wall with workout stats and an instructor figure.

Bridging Device and Mobile

We designed the experience to move seamlessly between device and mobile, ensuring each touchpoint felt connected and intuitive. User journeys were carefully mapped to support smooth transitions, whether users were interacting on-screen or managing settings through their phone.

Screenshot of a Mirror user flow diagram in Google Docs, with branching paths color-coded by flow type.
Exploded schematic showing the Mirror device’s mounting bracket, frame, and screen layers separated for assembly.

Form Meets Function

The product’s unique physical form became a foundational consideration in shaping the interface experience. We designed the UI to complement the hardware’s distinct geometry, creating interactions that felt natural, intuitive, and deeply integrated with the device itself.

User Experience

To move quickly toward an MVP that could be presented to investors, we worked through an ultra high-fidelity user experience stage to give the product a polished and presentation-ready feel. This allowed the team to refine user flows while confidently putting the experience in front of stakeholders early on.

Early high-fidelity UI screen showing a yoga pose with a trainer figure and side-rail controls on a dark Mirror interface.

Art Direction

Art direction of the trainer content was also a key factor because the surface of the screen needed to be reflective so users could see themselves.

Working with the brand direction from Partners & Spade, we created the first working prototype of the product.

First working prototype of the Mirror device displaying an early version of the UI in a studio setting.
Collage of Mirror companion app screens showing the workout library, training stats with progress rings, and an interval training prompt.
Mirror companion app onboarding flow on iPhone, asking workout length preference, gathering profile details, and surveying enjoyed workout types.
Mirror device onboarding screen titled ‘Let’s build your training program’ with steps for Profile, Fitness Goals, Preferences, Injury, Equipment, and Schedule.
Mirror device showing ‘Here’s your Program’ with a difficulty score of 8.6, a recommended Interval Training session, and trainer Lydia’s assessment card.
Mirror companion app on iPhone showing a trainer-booking screen alongside a weekly program card for an Interval Training session.
Mirror companion app workout-summary screen titled ‘Well done Ross!’ with time, calories, and difficulty stats and a heart-rate curve.
Mirror device showing a live community leaderboard with stacked rep counts and profile bubbles beside the workout in progress.