Lightweight! Workout Analysis5.0.0 - App Store

DON’T JUST TRACK YOUR TRAINING. SEE WHICH MUSCLES ARE ACTUALLY DOING THE WORK!

Lightweight! is a science-based workout tracking and analysis app built for fitness, bodybuilding, strength training, powerlifting, and anyone who wants to understand their training at a deeper level.
. Discover effective exercises
. Log your sets, reps, and weights
. Analyze your workout program with muscle-region heat-maps
. Choose from dozens of ready-made training programs from our experts
. Track your body progress and powerlifting performance
Don’t just track how much you train. See which muscles you’re training, which areas may be underworked, and how well you’re recovering.

MUSCLE GROWTH ANALYSIS & TRAINING SCIENCE

Training a muscle is only part of the equation. You also need to understand how much stimulus you’re creating and how well you recover between sessions.
Analyze how every workout affects individual muscles and muscle regions.
. See which muscles are working and by how much
. Get detailed muscle-region analysis
. Identify undertrained and overworked areas
. Analyze daily training stimulus
. Review weekly stimulus and muscle damage
. Track muscle fatigue and recovery
. Evaluate the muscle distribution of your training program
. Easily identify exercises that may be missing or unnecessary
Lightweight’s mathematical training model combines your exercises, sets, reps, effort, and training load to help you understand what your program is actually doing.

WORKOUT TRACKING & TRAINING LOG

Build your own workout program or choose from dozens of programs created by our expert team for different goals and training styles.
. Gym-based bodybuilding or powerlifting programs
. Programs designed specifically for women
. Equipment-free home workouts
. Dozens of 2, 3, 4, 5, and 6-day training plans
Log your sets, reps, weights, and performance with ease. Review previous workouts, track your progress, and plan your next session.
Whether your goal is building muscle, getting stronger, bodybuilding, or powerlifting, your complete training history stays with you.

DISCOVER THE BEST EXERCISES

Find the right exercise quickly with an extensive exercise library.
. Detailed filtering by muscle group
. Exercise selection by equipment
. Home workout and gym options
. Exercise instructions and demonstration videos
Whether you train at the gym or at home, find exercises that match your goals in seconds.

GYM, HOME, OR OUTDOOR TRAINING

Science-based training should work wherever you train!
. Gym exercises and structured workout programs
. Dumbbell and equipment-free home workouts
. Outdoor and calisthenics exercises
. Training options for women and men
. Programs for beginners through advanced athletes of all ages

TRACK YOUR STRENGTH

Follow your progress in the squat, bench press, deadlift, and other major lifts.
. Log the weights you lift
. Track personal records
. Monitor your estimated strength level
. Evaluate your powerlifting performance
. Compare your results with other Lightweight! users

TRACK YOUR BODY PROGRESS

Record your weight, body measurements, and other physical changes over time.
. Estimate your body fat percentage
. Calculate your FFMI
. Set and track weekly bodyweight and body-fat targets
See your training performance and physical progress in one place.
Lightweight! brings advanced training science and powerful analysis tools into one app, helping you understand your workouts instead of simply recording them.

Terms of Use: https://www.lightweightapp.com/company/terms
Privacy: https://www.lightweightapp.com/company/privacy
EULA: https://www.lightweightapp.com/company/eula

Version History • Finally, the update you’ve all been waiting for!
• Weekly training analysis: Build your program, analyze the whole week, and see exactly which muscles are getting the work and by how much!
• Detailed stimulus and muscle damage reports: See how each exercise affects each muscle in much greater detail.
• Start Workout: Log your entire workout from one screen. Less tapping, more lifting.
• Calendar view: Schedule workouts and see what’s on for today.
• Dozens of new program templates: Torso Limbs, Arnold Split or glute maxxxing at home with no equipment.. Pick one, start training, lift heavy things.
• Program sharing: Good programs deserve to be shared.
• Faster, smoother, more stable: Apparently, the app believes in progressive overload too. Lightweight babyyy!! 5.0.0 6d ago • Workout analysis is now more advanced than ever. Key variables like proximity to failure, rep range, and exercise order now work together to give you a much deeper analysis of your training.
• Dynamic rest timer is here! Based on the exercise you perform and your training parameters, the app recommends exactly how much rest you need, making workout experience smoother and more accurate.
• Tracking your sets is now much easier. With the RiR slider, advanced charts, time-spent-per-exercise metrics, and chart grouping and filtering features, workout tracking is far more enjoyable.
• Exercise search is now more efficient.
• Improvements made for a faster, more stable, smoother experience. 4.0.6 Apr 22 • Brand-new features on filters have been introduced, including improved exercise search and the ability to add favorite exercises directly to your workout program.
• To help you find the exercise you’re looking for faster, a heatmap view has been added to the exercise list view.
• Based on your requests, a monthly subscription plan has been added. 4.0.5 12/28/2025 • Workout Programs: Over 50 programs for every goal and level — most are free!
• Workout Analysis: See which muscles you’ve been overtraining or neglecting, and analyze your training balance.
• Anatomy View: Improved visual muscle map when selecting exercises.
• Sharing: You can now share your exercises directly via WhatsApp or Instagram!
• Bug Fixes: Minor improvements and stability updates.
• In this version, users will need to sign in again to continue using the app. 4.0.4 11/12/2025 • Added training volume and estimated 1RM graphs to exercise records.
• Fixed some minor bugs.
• Speeded up exercise records. 4.0.3 06/14/2025 • NEW: Log your sets in exercises!
• NEW: Group your favorite exercises!
• NEW: Learn how your body weight and fat percentage should progress week by week, observe how your body progresses as you take your measurements.
• NEW: Save your progress photos!
• NEW: Compare your LightWeight score with your strength level in a graphical view in all benchmark exercises!
• NEW: Easily log in with your Apple & Google account!
• Performance improvements have been made, some bugs have been fixed! 4.0.2 03/25/2025 4.0.1 10/25/2024 4.0.0 09/05/2024 3.0.0 06/09/2022 2.0.5 03/22/2022 2.0.2 03/05/2022 1.0.13 01/20/2022 1.0.12 12/21/2021 1.0.10 12/07/2021 1.0.9 12/02/2021 1.0.6 12/01/2021 1.0.3 10/06/2021 1.0.2 09/20/2021 1.0.0 09/15/2021