RepKit Workout Tracker Gym Log vs MassBuilder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RepKit Workout Tracker Gym Log
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REPKIT: THE ULTIMATE WORKOUT LOG FOR STRENGTH ATHLETES To maximize your results in the gym, you need to track your progress. It’s a simple rule: "What you don't measure, you can't improve." Stop relying on pen and paper or clunky notes apps. RepKit is a streamlined, high-performance workout tracker designed specifically for strength training. We won't lift the weights for you, but we make tracking, analyzing, and crushing your goals effortless. Whether you are a powerlifter, bodybuilder, or fitness enthusiast, RepKit is built to stay out of your way so you can focus on what matters: the next set. WHY CHOOSE REPKIT? * Speed First: Log your sets in seconds. No distractions, no bloat. * Data-Driven: Turn your lifting history into actionable insights. * Reliable Support: We are active lifters and developers. We listen to your feedback and update the app constantly to meet your needs. -------------------------------------------------- FREE FEATURES (Everything you need to grow): -------------------------------------------------- * Intuitive Logging: A clean interface designed for use DURING your workout. * Unlimited Everything: Create as many exercises, routines, and workouts as you want. No artificial limits. * Smart History Pre-fill: RepKit automatically loads your last weight and reps, so you always know the mark to beat. * Rest Timer: Built-in alerts to keep your intensity high and your breaks consistent. * Custom Exercise Library: Easily add your own movements with custom categories. * Cardio Tracking: Log duration, distance, and calories for your metabolic work. * Weight Tracking: Monitor your body weight evolution to stay on track with your bulk or cut. -------------------------------------------------- REPKIT PREMIUM (Take it to the next level): -------------------------------------------------- Unlock the full power of your training data with our advanced Pro tools: * Advanced Analytics: Beautiful, hardware-accelerated charts for volume, intensity, and frequency. * Estimated 1RM Tracking: Watch your theoretical One Rep Max grow for every exercise. * Personal Record : A detailed table of your all-time bests for every lift. * Complete Body Metrics: Track every inch of your progress. Log specific measurements for shoulders, chest, arms, thighs, and calves to visualize your muscular growth. * Export all your training data to CSV. SYNC * Cloud Backup: Your data is safe and accessible across all your devices. Stop guessing. Start progressing. Download RepKit today and make every rep count. User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.weekstudio.fr/workout-tracker/privacy-policy
MassBuilder
This app helps you build muscle by logging sets, planning weight increases, and checking your form with your camera. It offers daily challenges, workout programs, and detailed progress tracking with charts and photos.
- One-tap set logging
- Automated weight progression
- Camera-based form checking
- Daily exercise challenges
- Customizable workout programs
- Detailed progress charts
- Nutrition tracking
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Build muscle one set at a time. Log every set with one tap, and MassBuilder plans your next weight, so the bar gets heavier when you're ready. Check your form with the camera, set an alarm you can only stop by moving, and let four judges have opinions about your leg day. DAILY CHALLENGE - An alarm that keeps coming back until you've done the reps: push-ups, squats, burpees or pull-ups, all at once or in rounds through the day. - The camera counts in real time, as strict as you choose, and knows which way is down: wall push-ups don't count. Missed reps? Appeal. - Stamps at 7, 30, 100 and 365 days in a row, and props to unlock. - Want out? Hold Give up for five seconds. It costs a missed day, or an amount you pick in advance. Ill or injured? Pause mode turns it off. FORM CHECK - Stand your phone on the floor, side-on, and lift. The camera counts every rep in eight lifts and plays each one back next to the right movement for your build, with up to three things to work on. ONE TAP PER SET - Your workout is a punch card. Tap a hole and the set is logged with reps, weight and time. - The rest timer starts by itself, on the Lock Screen too, with four games for the wait. - Lay your phone on its side and the set fills the screen, with the tempo and a cue to brace. - Warm-up sets, a plate calculator and your next weight planned: more when you hit your reps, a deload after three misses. WOD - AMRAP, EMOM, For time, intervals, Tabata and Run & Stations, with the clock on your iPhone, wrist and TV. - A WOD for every day, benchmarks to beat and a builder for your own. MY DAY - Pull in My day from the edge of Today: steps, a stress score from your HRV, sleep and water, next to your plan for the day. YOUR YEAR IN CHARTS - Today is a board you arrange yourself: top sets, effort, records, recovery, tonnage in elephants and blue whales, and your year as holes. - Every lift has its own chart with your best set and estimated 1RM. Set a goal and see when you'll get there. - Measurements on a body figure, and progress photos that line up into a timelapse, kept on your device behind Face ID. PROGRAMS AND WORKOUTS - Fifteen programs ready to go, from 5×5 to bodyweight at home. Answer six questions, or say what you want, sore knee and all, and MassBuilder finds the one that fits. Or build your own. - 317 ready-made workouts to filter by type, length and equipment. - Tell MassBuilder your equipment, and lifts you can't do are swapped for ones you can. - Over 400 exercises as 3D figures you can turn, with the working muscles and four cues. EIGHTEEN LOOKS - From Chalk, Graphite and Blueprint to Rosé, Matcha and Christmas. Your Apple Watch and Apple TV follow. FUEL - Count protein, carbs and fat in grams, with daily targets and a trend that learns what you burn. APPLE WATCH, IPAD AND APPLE TV - Log sets and rest from your wrist and see your heart rate. Fuel too. - Your iPad does it all, in sync with your iPhone. - On Apple TV, your charts fill the room and your workout shows up big. THE BENCH - Four judges react to how you train: the chicken guards leg day, the disco builder lives for a press, the T-rex jokes about his arms and the sloth notices when nothing happens. - Pick Kind, Honest or Brutal. Every Monday they judge your week, never how you look. YOURS - No account. Your log lives on your devices and in your own private iCloud. - Camera video never leaves your device. - Apple Health both ways: workouts, effort, macros, weight, waist, water and your scale's weigh-ins. - Bring your log from another app, and export everything as CSV and JSON. No ads and no tracking. MassBuilder Pro, a subscription or a one-time purchase, unlocks every program, the WODs, focus mode, form check on every lift, Fuel, measurements and photos, every module and look, and your workout on Apple TV. MassBuilder Coach, a subscription for personal trainers, includes Pro. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: MassBuilder at daily against RepKit Workout Tracker Gym Log's every 4 months. MassBuilder also leads on device support (3 vs 1). RepKit Workout Tracker Gym Log's advantage is iOS requirement (18.5 vs 26.0). On price, ads and in-app purchases 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. RepKit Workout Tracker Gym Log sells 3 in-app purchases, starting at $5.99 per month and MassBuilder sells 8 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
RepKit Workout Tracker Gym Log ships an update every 4 months, MassBuilder daily. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.
| Parameter | RepKit Workout Tracker Gym Log | MassBuilder |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18.5 — better | 26.0 |
| Further details — not scored | ||
| Size | 110 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | Vincent CORRU | Oskar Ege |
In-app purchases
RepKit Workout Tracker Gym Log
- Monthly$5.991 Month
- Annual7 Days trial$34.991 Year
- Lifetime Plan$59.99
MassBuilder
- MassBuilder Pro14 Days trial$9.991 Month
- MassBuilder Coach$20.001 Month
- MassBuilder Pro14 Days trial$49.991 Year
- Give up today$1.99
- Give up today$3.99
- Give up today$7.99
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- Give up today$14.99
- MassBuilder Pro Lifetime$74.99





