Comparison

GymBook ・ Strength Training vs STRNG

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

Head to head
About

GymBook ・ Strength Training

Create, log, and analyze your gym workouts with this comprehensive fitness app. It offers custom exercise creation, detailed logging, and insightful performance analytics with interactive graphs. Track progress, sync data, and time your rests efficiently.

Highlights
  • Create custom workouts and exercises
  • Log sets, weight, and reps
  • Track workout progress with graphs
  • Adjustable rest timer
  • Sync data with Health app and Strava
  • Body measurement tracking
Features
Read full description

Here is GymBook, your fitness app to efficiently create, log and analyze your workouts at the gym - all in a beautiful and minimalist user interface. MANAGE YOUR WORKOUTS • Create your workout with your own exercises or choose from the 50+ simple exercises with animated images and visualizations of the affected primary and secondary muscle groups • Group and sort your exercises within a workout • Define the sets, weight and reps you want to perform for each exercise • Define different settings for your sets of an exercise (e.g. for warm up sets or pyramid training) • Archive workouts you don't actively use and keep them for statistics or for later use MANAGE YOUR EXERCISES • Edit the preloaded exercises • Create your own exercises (cardio and stretching exercises also supported) • Assign a region, primary and secondary muscle groups, equipment and write down notes for your exercises • Add a photo to your exercises WORK OUT! • Fast logging and tracking of your workout • Log your workout on your wrist with GymBook for Apple Watch • Extend your logs with notes to add additional information • Immediately see how you did last time • Use the pre-filled picker views for fast logging and Quick-Log for super fast logging • Quickly access logs from within a workout, including the graphical statistics • Change the workout date (if you want to log previous workouts) • Immediately see your exercise statistics in a configurable, interactive line graph • Move automatically to the next exercise of your workout after saving a log (configurable) • The workout screen immediately shows a detailed overview about today's workout • The innovative "Workout Matrix" gives you always a detailed overview about your current workout • Live Activities show your current workout right on your Lock Screen or on your Dynamic Island • After completing a workout, a summary shows your performance as well as your heat map and lets you analyze your progress compared to last time • Completed workouts are saved to the Health app (with date, start time, end time, duration, name and optionally active calories and heart rate) and to Strava MORE... • Time your rests with the adjustable timer which also works when you set your device to sleep or close your app: you can configure your preferred timer duration, have a primary and a secondary timer (even specific to an exercise), choose between a classic or a graphical timer, have different timer sounds and more • Receive a detailed analysis of your performance thanks to the interactive line graphs, doughnut charts, and/or radar charts • Track your body measurements and analyze your progress in interactive line graphs: some body measurements (weight, height, body fat percentage and waist circumference) will also be synced with the Health app • Export your logs as XML and CSV file and export a backup as a database file • Synchronize your data with iCloud • Change the appearance of GymBook and choose from one of 9 great designs, each one available in both light and dark mode *Some special functions can be activated with GymBook Pro. SUPPORT: GymBook supports metric (kilograms, meters) and imperial (pounds, feet) system of units. NOTE: GymBook is developed by gym experts, for gym experts. Therefore it focuses on YOUR workouts and provides only example workouts for better orientation. TERMS OF USE: https://gymbookapp.com/terms.

About

STRNG

This fitness app offers personalized workout plans and nutrition guidance from influential fitness experts. It provides a comprehensive exercise library, on-demand classes, and a supportive community to help users achieve their health and physique goals.

Highlights
  • Personalized workout plans
  • Comprehensive exercise library
  • On-demand fitness classes
  • Customizable nutrition plans
  • Progress tracking tools
  • Holistic health approach
Features
Read full description

STRNG — Strength, Coaching & Movement Train smarter. Move better. Stay consistent. STRNG is the all-in-one fitness app built for people who want to train for life — not just for a season. Most fitness apps push you to go harder until you burn out or break down. STRNG is built differently. We focus on movement quality, real coaching, and consistency — because the people who get results aren't the ones who train the hardest. They're the ones who keep showing up. Whether you train at home or in the gym, whether you're starting out or chasing a new personal best, STRNG gives you everything you need in one place. TRAINING PLANS FOR EVERY GOAL Build muscle, lose fat, get fitter, or train around life. Choose from structured programmes designed for beginner, intermediate and advanced levels — including pre and postnatal plans, express workouts for busy weeks, strength, conditioning and performance training. Every plan is built to progress with you. 1:1 COACHING Real coaching from a real coach — not a chatbot, not a generic plan. Get matched with a dedicated coach who builds around your goals, your schedule and your body. Message anytime through in-app chat, get accountability when motivation runs low, and finally have someone in your corner who knows your name. Limited capacity, real attention. THE MOVE SERIES Train the way athletes do. Our MOVE Series blends rehab principles with performance training across four pillars — ACTIVATE (prepare your body before training), RESTORE (address restrictions and niggles), REBUILD (fix the patterns behind stuck lifts) and RECOVER (maintain quality and reduce stiffness). It's not just workouts. It's a system that keeps you training consistently at a higher level over time. OVER 100 ON-DEMAND CLASSES Your studio, at the gym or at home. Follow along with on-demand classes across strength, conditioning, mobility and more — filmed with real coaches, suitable for every level. Train wherever you are, whenever it suits you. SMARTER NUTRITION Science-backed calorie and macro goals built around you, plus over 1,000 delicious, macro-friendly recipes to fuel your training. No fad diets, no guesswork — just nutrition that supports how you move. PERFECT YOUR FORM Clear video demonstrations for every exercise, so you always know exactly what you're doing and why. Train with confidence, reduce your risk of injury, and get more from every session. TRACK YOUR PROGRESS Log your sessions, track your lifts, and watch your consistency build over time. Collect STRNG achievements as you go and stay motivated towards your next milestone — because progress you can see is progress you keep. WHY STRNG? Real 1:1 coaching with human support and accountability Training plans for every goal and every level Over 100 on-demand classes for home or gym The MOVE Series — rehab-led training for long-term performance 1,000+ recipes with personalised nutrition goals Form guides for every exercise Progress tracking and achievements While using STRNG, members report feeling stronger, fitter and more consistent than ever before. Tens of thousands of people have already transformed the way they train. This isn't about chasing a quick fix. It's about building strength that lasts — physically, mentally, and for the long haul. Consistency beats perfection. Movement is the answer. Download STRNG and start training for life. Same community. Stronger than ever. https://www.joinstrng.com/terms-and-conditions

Screenshots

GymBook ・ Strength Training4 screens
STRNG4 screens

Verdict

The call

GymBook ・ Strength Training and STRNG both sit at 4.8 stars, but that hides the real split: 95% of GymBook ・ Strength Training's written reviews are positive against 53% of STRNG's. On price, rating, ratings volume and update cadence 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. GymBook ・ Strength Training sells 13 in-app purchases, starting at $1.99 per month and STRNG sells 16 in-app purchases, starting at $26.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for GymBook ・ Strength Training against 4.7 for STRNG. Both are backed by a comparable volume of ratings — 2.4K and 3.8K respectively. Written reviews are what separate them: 95% of GymBook ・ Strength Training's written reviews are positive against 53% of STRNG's.

UpkeepUpdate frequency

GymBook ・ Strength Training ships an update weekly, STRNG every 5 days. Both last shipped on October 29, 2026.

Scorecard1 real difference · 9 level
GymBook ・ Strength Training versus STRNG: the parameters behind the verdict, then further details
ParameterGymBook ・ Strength TrainingSTRNG
PriceFreeFree
Rating4.8 (2.4K ratings) — better4.7 (3.8K ratings)
Positive reviews94.6% of reviews — better53.5% of reviews
Number of ratings2.4K3.8K — better
Update frequencyWeeklyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS16.415.1 — better
Further details — not scored
Size393 MB119 MB
Age rating4++17
DeveloperAppwise GmbHSTRONG&SXY LTD

Customer experience

GymBook ・ Strength Training

All ratings2,433 ratings
Positive95.5%
Neutral2.3%
Negative2.3%
Written reviews411 reviews
Positive94.6%
Neutral1.7%
Negative3.6%

STRNG

All ratings3,809 ratings
Positive94.0%
Neutral1.9%
Negative4.1%
Written reviews389 reviews
Positive53.5%
Neutral12.9%
Negative33.7%

User reviews

GymBook ・ Strength Training

From 2.4K App Store ratings

What we love

  • 💪 Excellent workout tracking
  • 🔓 No subscription, one-time purchase
  • 👍 Simple and intuitive interface
  • 📊 Comprehensive data and progress tracking
  • 🤖 Seamless Apple Watch integration

Room to improve

  • 🕰️ Cumbersome weight/rep selection
  • 📚 Limited exercise catalog (some missing)
  • 🔀 Difficulty switching between workouts
  • 📈 Confusing progress graph visualizations
  • 🔍 Lack of search/filter options for exercises

STRNG

From 3.8K App Store ratings

What we love

  • 💪 Challenging and effective workouts
  • 🍽️ Customizable meal plans
  • 📚 Detailed exercise instructions and videos
  • 🕰️ Helpful workout timers and tracking
  • 🤝 Supportive community and customer service

Room to improve

  • 🐛 Frequent app glitches and bugs
  • 🔄 Limited ability to customize workouts
  • 💰 Expensive subscription cost
  • 🧭 Lack of progress tracking and history
  • 🍲 Meal plans not very flexible or personalized

Bugs and requests

GymBook ・ Strength Training

Reported bugs

2 issues
  • Occasional syncing issues with Apple Watch
  • Workout data sometimes recorded on wrong day

Requested features

6 requests
  • Add ability to copy/duplicate workouts
  • Implement calendar view for workout history
  • Allow manual entry of weights/reps instead of scrolling
  • Integrate body measurement tracking and progress graphs
  • Add more pre-made workout templates and routines
Show 1 more
  • Implement calisthenics and cardio exercise support

STRNG

Reported bugs

5 issues
  • App crashes and freezes during workouts
  • Workout data not saving properly
  • Meal plans not updating when swapping recipes
  • Inconsistent timer and rest period functionality
  • Login and password reset issues

Requested features

5 requests
  • Ability to create custom workout routines
  • Improved app stability and performance
  • More personalized meal planning options
  • Progress tracking and historical data
  • Apple Watch integration

In-app purchases

13 purchases

GymBook ・ Strength Training

Subscriptions2
  • GymBook Pro · Monthly7 Days trial$1.991 Month
  • GymBook Pro · Yearly14 Days trial$8.991 Year
One-time11
  • Timer+$3.99
  • Themes$3.99
  • Export$3.99
Show 8 more
  • Assistant$3.99
  • Cloud$3.99
  • Bronze ・ Package$5.99
  • +Exercises ・ Feature$5.99
  • Silver ・ Package$6.99
  • Gold ・ Package$12.99
  • Platinum ・ Package$17.99
  • GymBook Pro · Lifetime$22.99
16 purchases

STRNG

Subscriptions4
  • Monthly7 Days trial$26.991 Month
  • 3 Months$75.903 Months
  • 6 Months$78.996 Months
Show 1 more
  • 12 months$175.991 Year
One-time12
  • Kickstart Guide$19.99
  • HOURGLASS GUIDE$29.99
  • Lisa's 8 Week 4 Day Gym Guide$29.99
Show 9 more
  • Andrea Home$39.99
  • Movements for life vol. 1$39.99
  • GLUTE BUILDER GUIDE$39.99
  • Romanes Lean Bulk Guide$39.99
  • Lisa's 8 Week Lean Guide$39.99
  • Lisa's 8 Week Glute Guide$39.99
  • Lisa's 8 Week Strong Guide$39.99
  • Romane's 8 Week Shred Guide$39.99
  • Romane's 8 Week Bulking Guide$39.99

Questions

Is GymBook ・ Strength Training free?
GymBook ・ Strength Training is free to download, with in-app purchases available.
Is STRNG free?
STRNG is free to download, with in-app purchases available.
Which has better reviews, GymBook ・ Strength Training or STRNG?
GymBook ・ Strength Training is rated higher. GymBook ・ Strength Training averages 4.8 out of 5 from 2.4K ratings, while STRNG averages 4.7 from 3.8K ratings.
Do GymBook ・ Strength Training or STRNG have ads?
Neither GymBook ・ Strength Training nor STRNG shows ads.
Which is updated more often, GymBook ・ Strength Training or STRNG?
GymBook ・ Strength Training ships an update weekly, and STRNG every 5 days. Most recently, GymBook ・ Strength Training was updated on October 29, 2026 and STRNG on October 29, 2026.

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