Lift-it — Safer Weightlifting through Motion Tracking

Revolutionizing the educational ecosystem with a mobile app designed to enhance interactive learning and peer collaboration.

Role

Product Designer

Industry

Health

Duration

4 months

Problem: High injury rate from incorrect lifting form
Impact: 90% of test users found it more intuitive than existing apps

1. Discover: The form problem in fitness

While many gym-goers record their workouts, very few can analyze form or track barbell trajectory. Most existing apps were not localized or were too technical.

2. Define: Key user needs

Instant visual feedback on form
Intuitive UI (especially for non-English speakers)
Simple onboarding for casual lifters

3. Ideate: What’s essential?

We focused on building a prototype that:

Automatically tracks barbell movement
Provides video playback with overlaid trajectory
Highlights risky motion in real-time

Problem: High injury rate from incorrect lifting form
Impact: 90% of test users found it more intuitive than existing apps

1. Discover: The form problem in fitness

While many gym-goers record their workouts, very few can analyze form or track barbell trajectory. Most existing apps were not localized or were too technical.

2. Define: Key user needs

Instant visual feedback on form
Intuitive UI (especially for non-English speakers)
Simple onboarding for casual lifters

3. Ideate: What’s essential?

We focused on building a prototype that:

Automatically tracks barbell movement
Provides video playback with overlaid trajectory
Highlights risky motion in real-time

4. Design: Simplifying complexity

UI principles:

Use of contrast color coding (safe vs. danger zones)
Minimalist layout for in-gym usability
One-tap video review

5. Test & Results

We conducted usability testing with 12 gym users:

4.5/5 average rating for ease of use
90% said they preferred it over apps like WL Tracker and BarSense

Final Thoughts: Lesson Learned

This project was a testament to the importance of thorough user research and iterative design in creating solutions that truly meet user needs. It honed my skills in collaboration, problem-solving, and effective communication, setting a solid foundation for my future endeavors in UX/UI design.

Final Thoughts: Lesson Learned

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Leah Kim

Leah Kim

Leah Kim