Comparison

Lightweight! Workout Analysis vs Sunbud

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lightweight! Workout Analysis

This app helps users build muscle and strength with expert guidance and practical tools for various training styles. It offers clear exercise demonstrations, detailed muscle engagement insights, and allows for custom workout routine creation. Track your progress and monitor body metrics to achieve your fitness goals.

Highlights
  • Exercise discovery by muscle group
  • Customizable workout routines
  • Detailed exercise videos and form guidance
  • Muscle engagement heat maps
  • Strength benchmark tracking
  • Body metric monitoring
Read full description

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

About

Sunbud

Features
Read full description

Your camera can't measure your skin. We don't pretend it can. Sunbud is the honest sun companion: real UV data from Apple Weather, real skin science (the Fitzpatrick scale dermatologists actually use), and a personal safe-sun timer — with zero fake AI scans and zero made-up scores. Privacy Policy: https://www.pupday.app/sunbud/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ HOW IT WORKS • Pick your skin type (takes 10 seconds, no selfie required) • See the live UV index and your personal safe time — how long your skin can enjoy the sun before it needs a break • Start a sun session: Sunbud counts down on your Lock Screen and Dynamic Island • Get a friendly nudge when it's time for shade or a fresh layer of SPF WHAT YOU GET • Live UV index + hourly forecast for exactly where you are • Personal safe-sun timer tuned to your skin type and SPF • SPF top-up reminders every 2 hours during sessions • Morning sun brief — today's UV and whether you'll need sunscreen, at the time you choose • Home Screen and Lock Screen widgets • Streaks and sun history to build a healthy habit • And when UV is low? Sunbud tells you to relax. No fake urgency. PRIVATE BY DESIGN No accounts. No tracking. Your data never leaves your device — your location is used only to fetch the UV forecast from Apple Weather. SUNBUD PREMIUM Unlock your personal safe-sun timer, session tracking, and smart reminders. 3 days free, then $3.99/week or $24.99/year. Cancel anytime. Sunbud gives general guidance based on the WHO UV index — it's not medical advice. Sun that loves you back.

Screenshots

Lightweight! Workout Analysis4 screens
Sunbud4 screens

Verdict

The call

The clearest difference is update cadence: Sunbud at daily against Lightweight! Workout Analysis's every 2 months. Lightweight! Workout Analysis's advantage is iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lightweight! Workout Analysis sells 3 in-app purchases, starting at $2.99 per month and Sunbud sells 2 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Lightweight! Workout Analysis ships an update every 2 months, Sunbud daily. The most recent releases landed on October 17, 2026 and September 29, 2026 respectively.

Scorecard2 real differences · 8 level
Lightweight! Workout Analysis versus Sunbud: the parameters behind the verdict, then further details
ParameterLightweight! Workout AnalysisSunbud
PriceFreeFree
Rating4.8 (181 ratings) — better—
Positive reviews76.5% of reviews—
Number of ratings181 — better—
Update frequencyEvery 2 monthsDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size122 MB2 MB
Age rating4+4+
DeveloperLIGHTWEIGHT LLCOzgur ARSLAN

In-app purchases

3 purchases

Lightweight! Workout Analysis

Subscriptions3
  • Lightweight Pro - Monthly$2.991 Month
  • Lightweight Pro - Annual Discounted$5.991 Year
  • Lightweight Pro - Annual$14.991 Year
2 purchases

Sunbud

Subscriptions2
  • Sunbud Premium Weekly3 Days trial$3.997 Days
  • Sunbud Premium Annual3 Days trial$24.991 Year

Questions

Is Lightweight! Workout Analysis free?
Lightweight! Workout Analysis is free to download, with in-app purchases available.
Is Sunbud free?
Sunbud is free to download, with in-app purchases available.
Do Lightweight! Workout Analysis or Sunbud have ads?
Neither Lightweight! Workout Analysis nor Sunbud shows ads.
Which is updated more often, Lightweight! Workout Analysis or Sunbud?
Lightweight! Workout Analysis ships an update every 2 months, and Sunbud daily. Most recently, Lightweight! Workout Analysis was updated on October 17, 2026 and Sunbud on September 29, 2026.

Other comparisons