GymJC – Workout & Interval Log

Workout Tracker, Gym Log, Rep Counter & HIIT Timer – Log Reps, Sets & Workouts for Free

GymJC is the workout tracker and gym log that knows what you train, tracks muscle recovery, and builds your next workout from what's ready. A fast rep counter, HIIT timer, Tabata timer, and interval timer — all in one app. Built for strength training, bodybuilding, EMOM, AMRAP, and cardio. Log workouts, track progress with charts, and sync with Apple Health.

YOUR NEXT WORKOUT, PLANNED FROM YOUR RECOVERY

• Every set you log is tracked per muscle, so GymJC knows what's recovered and what's still recovering
• Recovery workout: a ready-made session built from your recovered muscles and the exercises you already do
• Muscle recovery map: front and back views colored by how hard each muscle has been worked

WORKOUT TRACKING MADE SIMPLE

• Log workouts quickly with an intuitive, distraction-free interface
• 270+ exercises with professional video demos
• Create custom exercises or variations from existing ones
• Add your own photo to a custom exercise — it becomes its thumbnail and illustration
• Write your own instructions, with links that open with a tap
• Track sets, reps, weight, bodyweight, time, distance, duration
• Add notes and location to each session

ADVANCED TRAINING TOOLS

• Interval timers: HIIT, Tabata, EMOM & AMRAP with voice cues, custom sounds & rep tracking — use built-in presets or create your own
• Supersets & tri-sets
• RPE (Rate of Perceived Exertion) tracking
• Intelligent rest timer and workout timer with auto-start
• 1RM Calculator with rep range estimates
• Plate Calculator with visual barbell diagram
• Live Activities on Lock Screen & Dynamic Island
• Built-in programs: StrongLifts 5×5, PPL, Upper/Lower, Arnold Split & more
• Create workout templates from scratch or save any workout as a reusable template

YOUR PROGRESS, VISUALIZED

• See your improvement with beautiful charts and detailed statistics
• Interactive volume, duration, and frequency charts
• Workout streak tracking
• Muscle group distribution across 13 groups
• Weekly, monthly, and yearly activity calendars
• Progress views for week, month, year, or all time
• Automatic personal record tracking
• Share beautiful workout summary cards on social media — even overlay your stats on a gym selfie

BODY TRANSFORMATION TRACKING

• Progress photos: capture Front, Side, and Back poses
• Ghost Mode: align new photos perfectly with a transparent overlay of your previous shot
• Compare and share your transformation with side-by-side photo comparisons
• Interactive body diagram for quick measurement logging
• Multiple measurement points (weight, chest, waist, arms, legs, and more)
• BMI calculation with health indicators
• Visual progress charts for every measurement

APPLE HEALTH INTEGRATION

• Sync completed workouts, weight, and height with Apple Health
• Review your heart rate chart after each session
• Import weight and height from Apple Health

PRIVACY-FIRST

• Your data stays yours—always
• All data stored locally or in your iCloud account
• No third-party servers or data mining
• Full backup & restore

HOME SCREEN WIDGETS

• Stay motivated with widgets showing weekly workouts, volume, duration, and your current streak

FREE TO USE

• Everything above is free — unlimited logging, the Recovery workout, programs, timers, iCloud sync and backups — with Pro unlocking the extras below

GO PRO FOR MORE

• Full stats: month, year, all time
• Add up to 10 exercises per interval timer preset
• Unlimited measurement & progress photo history
• Complete personal records history
• Backup import/export for full data portability

Perfect for powerlifting, bodybuilding, CrossFit, calisthenics, or general fitness — GymJC adapts to any training style.

Download GymJC and train your way to your strongest self.