Selected project

Progressive Web App

Log4Gym

Track your training, own your progress.

A workout-tracking application with reusable routines, a 571+ exercise library, and more than 15 analytics views for understanding training progress.

Open Log4Gym Discuss a project
Log4Gym workout tracking app

Features

Everything you need to track your training

Workout Logging

Log sets, weight, reps, RPE, and cardio metrics. Auto-fill from previous sessions for faster logging.

15+ Analytics Widgets

Personal records, volume trends, muscle group balance, estimated 1RM, workout streaks, calendar heatmap.

Built-in Calculators

Plate calculator, strength standards, RPE/RIR converter, and TDEE/macro calculator.

571+ Exercise Library

Curated exercises with animated visual instructions and muscle group filtering.

Reusable Routines

Create workout templates with default sets, reps, and weight. Start a session in one tap.

Rest Timer

Circular progress timer with audio and vibration alerts between sets.

Built With

Tech Stack

Next.jsSQLiteDrizzle ORMTailwind CSSRecharts

Highlights

Why Log4Gym

  • →Free to use — no subscriptions or paywalls
  • →Install on your phone as a native-feeling PWA
  • →Detailed analytics to track strength progression over time
  • →CSV export of full workout history

Try Log4Gym

Start tracking your workouts with a guest account — no signup required.

Start tracking