Mobile UX Redesign

This redesign was made for the fitness application Jefit while in graduate school at University of Washington. The final designs were provided to Jefit and they ended up being used for the next Android application iteration. Our project requirements were to employ a user centered design method to improve a wellness application.


Jefit is a mobile fitness application that enables users to track their progress, find and build custom routines, and connect with the fitness community to stay motivated towards a healthy lifestyle. My team and I set out to improve the design of the IOS application in order to create a better fitness experience. We utilized market research and a cognitive walkthrough to identify major usage frustrations. After, we iteratively designed and tested to create a great Jefit experience.

UX Process

Figure 1. User-Centered Design Process


A great design starts with a deep understanding of the audience. The typical Jefit user is a North American male around the age of 27. He is just starting out or is somewhat versed in fitness exercise, and desires an effective system to build his dream body.

Figure 2. Most Common Jefit User

We researched who the real Jefit users are by combing through Jefit forums and looking at web meta information from Google Trends and Alexa. We then observed some would be end-users work out a few times to understand a typical routine.


To build a better understanding we held some informal semi-structured interviews with end-users gaining insight to their values, motivations, and needs for their fitness goals.


Every team member downloaded and used Jefit to gain an understanding of what it’s like to use Jefit – this was invaluable to creating a better experience.


Jefit holds a plethora of interactions for a user to perform, many which are well received. To identify where the application is lacking, we conducted market research and found the information architecture and how you navigate were the most problematic. We then hosted a cognitive walkthrough and observed how participants navigated and understood the most problematic areas.

Market Research

We analyzed over 600 user reviews from application stores. From these, we got 74 valuable insights into what areas of Jefit need improvement. This was great to gather lots of qualitative responses of real end users, quickly.

The UX is profoundly inefficient and unintuitive. After working for half an hour trying to customize a workout, I decided to dump it. It’s way too cluttered. tclary, iOS.
Cognitive Walkthrough

We then hosted a cognitive walkthrough with five participants who talked aloud their thought process while demonstrating a few critical functions of Jefit.

For each task we wanted to tell a credible story for these two questions:

  • Will the user know what to do at this step?
  • If the user does the right thing, will they know they did the right thing, and are making prrogress towards their goal?

The cognitive walkthrough helped us prioritize and focus the findings to redesign how you start manage routines, search for exercises, and download more routines.

Figure 3. Cognitive Walkthrough.


Our group brainstormed and group sketched to form creative solutions for how to overcome the difficulties users faced.


Our brainstorming sessions focused on generating a high quantity of creative problem solving. We made sure to encourage wild ideas and deferred judgement.

Figure 4. Brainstorming Ideas.

As with brainstorming, group sketching is vital to any UX process. This allowed us to synthesize ideas into wireframes for an appropriate solution.

Figure 4. Initial Sketches.


We rapidly prototyped different solutions and got them ready to test on people.


This was great for generating many designs. We were able to quickly mock some up with Axure and test them on participants.

Figure 4. Rapid Prototypes.


With our working Axure prototypes, we had a few new participants talk aloud the same tasks as the prior cognitive walkthrough. Participants then provided feedback on the usability of two redesigns. This helped identify the most usable ideas for high-fidelity mock ups.

Final Product

With our finalized designs we were able to make research based decisions on how to address the the critical problems within Jefit’s IOS interface: managing routines, downloading routines, and finding exercises. We even added features we thought the business could benefit from as a whole! Read the whole report here! Our team is really proud of our redesigns, we hope you like them to!

Figure 6. Original Jefit Designs.
Figure 6. Our Jefit Redesign.


We ended up contacting the Jefit CEO on linkedIn and gave him the assets we spent some time creating. The CEO thanked us and ended up using our work in their next application iteration.

Date February, 2014
Type UX Design, UI Design


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