Comparison

GymBook ・ Strength Training vs Stacked

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

Stacked

This application helps users plan and track weightlifting workouts to build muscle and strength. It offers a clean interface designed by weightlifters for weightlifters, with features for routine creation, progress tracking, and automatic plate calculations.

Highlights
  • Plan and track weightlifting workouts
  • Create simple or complex routines
  • Track personal records
  • Automatic plate math
  • Review past workout data
  • Cloud data backup
Features
Read full description

FINALLY! A 100% FREE WEIGHTLIFTING APP ACTUALLY WORTH USING! Whether you’re a beginner or an experienced weightlifter, Stacked will help you gain muscle and strength faster. With it, you can easily and effectively plan and track your weightlifting workouts and fitness goals. And unlike most other weightlifting apps, Stacked isn’t ugly, unwieldy, unintuitive, and cluttered with unimportant features that you’ll never use. Instead, it’s clean, elegant, and streamlined because it was built by weightlifters for weightlifters. And better still—Stacked is 100% free with no restrictions or hidden upgrade fees. Here are just a few examples of why Stacked is special . . . Create simple or complex workout routines Choose Imperial or metric measurements Set weight and rep goals for exercises Track personal records for all exercises Change workouts on the fly by adding or removing exercises and sets Automatically do plate math (always know how to load the bar correctly!) Review past workouts including exercises, sets, notes, duration, volume, and more Automatically back up your data in the cloud And more! So, if you’re ready to get more out of your training by successfully planning, tracking, and analyzing your workouts, download Stacked now and start your journey today!

Screenshots

GymBook ・ Strength Training4 screens
Stacked4 screens

Verdict

The call

The clearest difference is in-app purchases: Stacked at none against GymBook ・ Strength Training's 13. Stacked also leads on iOS requirement (11.0 vs 16.4). GymBook ・ Strength Training's advantage is review sentiment (95% vs 66%) and update cadence (weekly vs every 6 weeks). On price, ratings volume, ads and monetization model 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. Stacked asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

GymBook ・ Strength Training holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 2.4K and 1.7K respectively. Written reviews point the same way: 95% of GymBook ・ Strength Training's written reviews are positive against 66% of Stacked's.

UpkeepUpdate frequency

GymBook ・ Strength Training ships an update weekly, Stacked every 6 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
GymBook ・ Strength Training versus Stacked: the parameters behind the verdict, then further details
ParameterGymBook ・ Strength TrainingStacked
PriceFreeFree
Rating4.8 (2.4K ratings) — better4.6 (1.7K ratings)
Positive reviews94.6% of reviews — better65.8% of reviews
Number of ratings2.4K — better1.7K
Update frequencyWeekly — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS16.411.0 — better
Further details — not scored
Size393 MB110 MB
Age rating4+4+
DeveloperAppwise GmbHM4L, Inc.

Customer experience

GymBook ・ Strength Training

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

Stacked

All ratings1,638 ratings
Positive88.8%
Neutral3.4%
Negative7.8%
Written reviews459 reviews
Positive65.8%
Neutral6.8%
Negative27.5%

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

Stacked

From 1.7K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Intuitive interface
  • 👍 Comprehensive workout tracking
  • 👍 Detailed progress monitoring
  • 👍 Preloaded workouts from popular programs

Room to improve

  • 🐛 Occasional crashes and bugs
  • 🐛 Unreliable data saving and syncing
  • 🐛 Inability to edit or delete workouts
  • 🐛 Inconsistent weight/plate input
  • 🐛 Confusing user interface in parts

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

Stacked

Reported bugs

5 issues
  • Workout data not saving properly
  • Inability to log certain weight increments
  • Frequent crashes and freezes
  • Sync issues causing loss of workout history
  • Incorrect default weight display

Requested features

8 requests
  • Ability to edit and delete workouts
  • More customization options for workouts and routines
  • Integration with Apple Health and other fitness apps
  • Exercise demonstration videos or GIFs
  • Superset and triset functionality
Show 3 more
  • Ability to set custom rest periods
  • Warm-up set planning and tracking
  • Improved data syncing and backup

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
None

Stacked

No in-app purchases

Questions

Is GymBook ・ Strength Training free?
GymBook ・ Strength Training is free to download, with in-app purchases available.
Is Stacked free?
Stacked is free to download, with no in-app purchases.
Which has better reviews, GymBook ・ Strength Training or Stacked?
GymBook ・ Strength Training is rated higher. GymBook ・ Strength Training averages 4.8 out of 5 from 2.4K ratings, while Stacked averages 4.6 from 1.7K ratings.
Do GymBook ・ Strength Training or Stacked have ads?
Neither GymBook ・ Strength Training nor Stacked shows ads.
Which is updated more often, GymBook ・ Strength Training or Stacked?
GymBook ・ Strength Training ships an update weekly, and Stacked every 6 weeks. Most recently, GymBook ・ Strength Training was updated on October 29, 2026 and Stacked on October 24, 2026.

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