Comparison

GymBook ・ Strength Training vs IronStack

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

IronStack

Log your gym workouts quickly and efficiently with this streamlined strength training app. Track progress, set personal records, and customize exercises without unnecessary clutter or account creation. Offers optional Pro features for advanced insights and AI-generated workouts.

Highlights
  • Fast workout logging
  • Automatic PR detection
  • Built-in rest timer
  • Customizable exercises
  • Apple Watch integration
  • Workout history search
  • Optional AI workout generation
Features
Read full description

Log your lifts in seconds. No account. No clutter. Just training. IronStack is built for lifters who want to stay focused in the gym, not fight with their app. Fast, streamlined workout logging and organization built for real world use. Now with dark mode. Start a workout, log your sets, and keep moving. Privacy comes first. Your data stays on your device, and you stay in control with no sign-ups, no friction, and no unnecessary data collection. LOG FAST. TRACK EVERYTHING. · Tap to log weight, reps, or duration · Quick +/- controls for instant adjustments · See your last session alongside each set · Built-in rest timer with one-tap presets · Automatic warm-up sets for any exercise · Workout and exercise notes BUILT-IN PROGRESS TRACKING · Automatic PR detection so you never miss a record · Track total volume across sessions · Share PRs with a clean visual card · Search your full workout history · Estimated 1RM and progress trends FULLY CUSTOMIZABLE EXERCISES · Filter by muscle group, equipment, and category · Video demos for every exercise · Create and manage as many custom exercises as you want · Track reps or duration APPLE WATCH INTEGRATION Train hands-free. Sync with your Apple Watch in real time. Log sets from your wrist, track calories and heart rate, and stay in the zone. ORGANIZED YOUR WAY Build your training library your way. Create folders, duplicate workouts, and structure everything to match how you train. IRONSTACK PRO OPTIONAL UPGRADE Unlock more powerful tools: · AI workout generation tailored to your goals · Training Insights with post-workout analysis and next-session suggestions · Advanced analytics with trends, charts, and smart targets · Visual plate calculator · Unlimited workouts Available as a one-time purchase or subscription. Built for lifters who want less app, more training. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

GymBook ・ Strength Training4 screens
IronStack4 screens

Verdict

The call

The clearest difference is ratings volume: GymBook ・ Strength Training at 2.4K against IronStack's 7. IronStack's advantage is update cadence (every 3 days vs weekly). On price, rating, review sentiment and ads 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 IronStack sells 3 in-app purchases, starting at $2.99 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 4.9 for IronStack. That said, the two scores are not equally well evidenced: GymBook ・ Strength Training has 2.4K ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 95% of GymBook ・ Strength Training's written reviews are positive against 100% of IronStack's.

UpkeepUpdate frequency

GymBook ・ Strength Training ships an update weekly, IronStack every 3 days. The most recent releases landed on September 25, 2026 and September 11, 2026 respectively.

Scorecard2 real differences · 8 level
GymBook ・ Strength Training versus IronStack: the parameters behind the verdict, then further details
ParameterGymBook ・ Strength TrainingIronStack
PriceFreeFree
Rating4.8 (2.4K ratings)4.9 (7 ratings) — better
Positive reviews94.6% of reviews100.0% of reviews — better
Number of ratings2.4K — better7
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, Apple WatchiPhone, iPod, Apple Watch
Requires iOS16.415.1 — better
Further details — not scored
Size389 MB56 MB
Age rating4+4+
DeveloperAppwise GmbHMarcus Lorenzana

Customer experience

GymBook ・ Strength Training

All ratings2,421 ratings
Positive95.5%
Neutral2.3%
Negative2.2%
Written reviews409 reviews
Positive94.6%
Neutral1.7%
Negative3.7%

IronStack

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

IronStack

Not enough reviews yet to summarise bugs or requests.

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
3 purchases

IronStack

Subscriptions2
  • Pro Monthly$2.991 Month
  • Pro Yearly$19.991 Year
One-time1
  • IronStack Lifetime Unlock$39.99

Questions

Is GymBook ・ Strength Training free?
GymBook ・ Strength Training is free to download, with in-app purchases available.
Is IronStack free?
IronStack is free to download, with in-app purchases available.
Which has better reviews, GymBook ・ Strength Training or IronStack?
IronStack is rated higher. GymBook ・ Strength Training averages 4.8 out of 5 from 2.4K ratings, while IronStack averages 4.9 from 7 ratings.
Do GymBook ・ Strength Training or IronStack have ads?
Neither GymBook ・ Strength Training nor IronStack shows ads.
Which is updated more often, GymBook ・ Strength Training or IronStack?
GymBook ・ Strength Training ships an update weekly, and IronStack every 3 days. Most recently, GymBook ・ Strength Training was updated on September 25, 2026 and IronStack on September 11, 2026.

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