GymJC vs Dynamis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GymJC
This app is a comprehensive workout tracker and gym log designed for simplicity and effectiveness. It offers a fast rep counter, interval timers, and tools for logging sets, reps, and weight. Visualize your progress with detailed charts and integrate with Apple Health for a complete fitness overview.
- Intuitive workout logging
- 235+ exercises with video demos
- Customizable interval timers (HIIT, Tabata, EMOM)
- Supersets and tri-sets support
- Progress visualization with charts
- Body transformation tracking with photos
- Apple Health integration
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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.
Dynamis
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Track your progress. Hit your goals. Train without distractions. Dynamis is a workout tracker built for serious lifters. Log your training on iPhone with a clean, focused interface, or leave your phone in the locker and use the fully native Apple Watch app directly from your wrist. No subscriptions. No mandatory accounts. No clutter. Just the tools you need to train hard and track real progress. ON IPHONE: • Build custom workout routines in seconds • Log weight, reps, and RPE with speed and precision • Track body weight and create a visual progress diary with photos • Review workouts, cardio sessions, and notes in an interactive calendar ON APPLE WATCH: • View your routine and log sets directly from your wrist • Use smart rest timers with subtle haptic alerts • Monitor heart rate and active calories live during training PRIVATE BY DESIGN: • Sync workouts, heart rate, and active energy with Apple Health • Keep your data on your device or in your personal iCloud • Your data and photos stay private — we never access them Dynamis helps you stay consistent, train smarter, and see your progress over time.
Screenshots
Verdict
The clearest difference is in-app purchases: Dynamis at none against GymJC's 2. On price and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. GymJC sells 2 in-app purchases, starting at $3.99 per month. Dynamis asks for nothing beyond the download.
| Parameter | GymJC | Dynamis |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 8 days | — |
| Ads | No | — |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone — better | — |
| Requires iOS | 18.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 73 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | semaro | Alessio Pompei |
In-app purchases
GymJC
- GymJC Pro$3.991 Month
- GymJC Pro$24.991 Year
Dynamis
No in-app purchases









