Fitlogs: Evidence-Based Fitness Tracking

01/The Brief

The Academic Spark

This project originated from a 50-page academic UX research study I conducted evaluating the market leading fitness application, MyFitnessPal. Through contextual observation and user interviews, I discovered that severe interface friction and overcomplicated tracking tools were driving users to abandon secondary features entirely, forcing them into a single flow. My mission was to build a better alternative from the ground up: a unified, data-driven ecosystem designed to effortlessly manage both nutrition and strength training in one platform.

02/Academic Rigor & Strategic Architecture

To diagnose the problem space, I conducted semi-structured user interviews and contextual observation sessions. The research revealed a singleflow trap: 75% of participants exclusively engaged with food logging. By mapping the decision matrix for this specific task, I identified areas of high cognitive load that caused users like Casual Jane to struggle with consistency and eventually abandon the app.

Meanwhile, secondary features were neglected entirely. After trying the app's exercise tracker, the Macro Mark persona abandoned it, reverting to a physical notebook because the interface was overcomplicated and the data was inaccurate.

These insights directly informed the product's foundation. By analyzing these distinct behaviors, I established the 2+1 architecture: a framework where both frictionless nutrition and progressive overload share top-level priority, funneling seamlessly into a centralized health dashboard.

03/Wireframing the Workout Experience

Early wireframes stripping away complex navigation for a dense, scannable workout-logging layout.

04/High-Fidelity Design

Frictionless Dietary Tracking

I polished the food diary interface to completely eliminate the cognitive load identified during the research phase. By restructuring the information architecture, all entry fields remain explicitly visible immediately upon opening the tab. I stripped away the static advertisements and nested menus that plague market leaders, ensuring users no longer face the friction that previously caused them to abandon their tracking habits. Macro targets are visualized through intuitive, color-coded components, making daily adherence scannable at a glance.

The Progressive Overload Engine

To solve the frustrations of Macro Mark, I designed a training logger that rivals a physical notebook in speed, but far exceeds it in utility. The interface allows users to seamlessly log lifts, track plateaus, and view historical progression inline. To provide deeper analytical value without added complexity, the system leverages the Epley formula to dynamically calculate and chart a user's estimated one-rep max across all logged sets, transforming raw data into a clear progression curve.

1RM = W(1 + R/30)

The Holistic Dashboard

The main hub serves as the ultimate convergence point for the 2+1 architecture. Rather than isolating metrics, the dashboard unifies daily nutritional adherence and exercise volume, directly correlating those inputs to the user's overarching weight tracking goals. This provides actionable, unified insights, proving that the kitchen and the gym are inherently connected.

05/AI-Assisted Development

06/Future Vision & Outcomes

The Technical Roadmap

Fitlogs is an actively evolving ecosystem. While the immediate focus is on finalizing the native iOS and Android applications for App Store deployment, the long term trajectory centers on intelligent automation. By integrating AI driven personal training and contextual post-workout insights, the platform will evolve from a passive tracking tool into an active coaching system designed to dynamically prevent user plateaus.

Outcomes & Reflections

Building Fitlogs fundamentally shifted my perspective from a UX Researcher to an end-to-end Product Founder. While translating dense academic research into a functional react native codebase redefined how I architect digital products, the greatest reward has been entirely personal. I designed a tool that I genuinely rely on every single day. Since pushing Fitlogs live, I have experienced the best fitness gains of my life. The interface makes the core principle of progressive overload effortless, allowing me to quickly look back at exactly what I lifted last week and incrementally push those numbers higher. Experiencing firsthand how that compounding progress can genuinely change your life has been the ultimate validation of this entire product journey. Because taking control of your health shouldn't be locked behind a premium subscription, Fitlogs is completely free, and I would love for you to try it for yourself.