07
amp Fitness app
Replace movement
Project overview
Replace Movement is a core workout feature in amp that lets users swap an exercise before or mid-session.
The old design showed long, static lists with little logic or personalization. This slowed people down at the exact moment they needed speed and clarity. I led a redesign that introduced ranking logic, progressive disclosure, and short video previews. The new system makes replacement faster, more relevant, and aligned with amp’s promise of a personalized experience.
Challenge & Context
The original Replace Movement feature presented a long, static list of alternatives split into two vague categories. There was no ranking logic to suggest which options were more suitable, and only static photos to represent each movement.
For users, this design turned a quick action into a disruptive moment. Mid-workout, instead of making a fast swap, they had to scroll, compare, and guess — adding friction at a time when focus and efficiency matter most. Both Data and UXR sessions confirmed this: People were spending longer than expected on a task designed to be quick, and asked for clarity of usage.
For the company, this translated into two key issues. First, longer replacement times signaled inefficiency, directly undermining the purpose of the feature. Second, the lack of personalization in suggestions conflicted with amp’s positioning as a platform built on tailored, intelligent experiences.
Approach & Process
I started by reframing the problem: replacing a movement isn’t about browsing options, it’s about restoring flow as quickly as possible. This meant the design had to respect the workout context. High focus, limited time, and little patience for complexity.
I grounded the work in two core principles:
Progressive disclosure: surface only what’s most useful in the moment.
Clarity and speed over volume of options.
Working with developers, I introduced a new ranking model:
Prioritize saved movements to reflect user preference.
Match on setup and body region to minimize equipment changes.
Weighted by popularity, so familiar, proven choices appear first.
The redesign made these changes visible in the interface:
A top-five list of context-aware results, shown first.
Each option is represented with a short looping video instead of static images, so users can understand the movement instantly.
A “see all” expansion that defaults to the same body region, allowing exploration without losing relevance.
My role was to align the team on a definition of what “good replacement” means, rather than just presenting a list. This required coordinating design, PM, and engineering around principles that could scale beyond this feature.
Outcome
The redesign delivered a faster and more reliable replacement flow. Early data showed a 50 percent reduction in time spent on this feature, confirming that people were finding what they needed more quickly.
For users, this meant fewer interruptions and more trust in the system. For amp, it reinforced the brand promise of personalization and efficiency. The replacement logic also became a repeatable model, later applied to other features, such as Quick Start and Quick Sets.
Next work
