PowerTrack is a full-featured workout and strength training web app designed and built entirely using Bolt.new. The platform helps users plan, track, and optimize their gym sessions with features like custom templates, exercise logging, and smart set structures like supersets and giant sets.

We used a high-contrast color palette of white, black, and red to give the interface a crisp, modern, and athletic feel:

White for clarity and breathing room

Black for bold, legible UI elements and strong structure

Red as a high-impact accent for key actions and motivators (e.g., buttons, progress indicators)

Typography includes:

Headlines: Heavy grotesque-style sans-serif font for maximum legibility and impact

Body text: “Enter” for a clean, geometric paragraph style

The first prompt to Bolt:

“Create a full-stack responsive web app for tracking weightlifting workouts. Name it PowerTrack. Users should be able to build custom workout templates, track sets, reps, and weights, and include supersets and giant sets. Use a sporty, black-white-red color palette and a bold modern font. Prioritize a mobile-first layout and use Supabase for authentication and data.”

Key prompt follow-ups:

“Add a dashboard for viewing recent workouts and progress graphs.”

“Create an ‘Add Workout’ flow with support for adding supersets and selecting saved templates.”

“Style all buttons in black with red hover states.”

“Use white backgrounds with strong black text and red accent elements for CTA and highlights.”

✔️ Full user auth with Supabase

✔️ Create + save workout templates

✔️ Add individual exercises or grouped supersets

✔️ Track reps, weight, RPE, notes per set

✔️ Edit/delete workouts post-session

✔️ Dashboard overview with workout history

✔️ Mobile-first responsive layout

✔️ Dark-on-light UI with red accent for momentum and call-to-action

We hit an issue early with Supabase not initializing:

"Supabase credentials are missing..."

Fix:

Created a .env file with:

Restarted the WebContainer → credentials loaded correctly.

We saw this in testing:

{"code":"email_not_confirmed"}

Fix:

Enabled email confirmation toggle in Supabase Auth settings. Also, added error messaging in the UI for smoother UX.

PowerTrack was built and styled completely inside Bolt.new with no external IDE. The result is a clean, modern strength-tracking app that feels like a polished SaaS product.

Fully responsive

Custom workout creation

Log + track performance

Supabase-secured login system

Color-coded metrics and red-accented CTA for user momentum

Bolt is incredibly powerful when used with precise prompts and a clear design vision

Troubleshooting backend errors is still needed, but the built-in support system helps

Styling was easy to control with Tailwind/inline styling, but requires explicit prompt instruction

Using bold colors like red in moderation helps build urgency and drive user action