Comparison

GymBook ・ Strength Training vs Iron Zone

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

Iron Zone

Track and share your fitness journey with a vast library of exercises and customizable plans. Log gym progress, discover new routines, and connect with a community for motivation and inspiration.

Highlights
  • 300+ exercises
  • Custom exercise creation
  • Workout plan builder
  • Social sharing and interaction
  • Performance insights
  • Weightlifting milestone tracking
Read full description

Iron Zone is the workout tracker built for lifters who take their training seriously — and love sharing the journey. Track every set, rep, and PR with a clean, distraction-free logging experience. Built for the gym floor, Iron Zone gets out of your way so you can focus on the iron. **POWERFUL WORKOUT LOGGING** - Log sets with weight, reps, and RPE in seconds - Built-in rest timer so you never lose count between sets - Superset support for complex training blocks - Per-exercise notes to capture form cues and coaching points **SMART TRAINING PLANS** - Create and follow structured training routines - Organize sessions by week with collapsible views - Browse and save workout templates from the community - Jump into a workout from any template in seconds **TRACK YOUR PROGRESS** - View full exercise history at a glance - Interactive charts to visualize strength trends over time - Personal records tracked automatically - Weekly and monthly volume reports **SOCIAL FEED** - Share completed workouts with your followers - Like and comment on your training partners' sessions - Follow requests and privacy controls built in - Explore page to discover other athletes Iron Zone is free to download. Start logging your first session today.

Screenshots

GymBook ・ Strength Training4 screens
Iron Zone4 screens

Verdict

The call

The clearest difference is review sentiment: GymBook ・ Strength Training at 95% against Iron Zone's 0%. GymBook ・ Strength Training also leads on ads (none vs shown) and update cadence (weekly vs every 4 weeks). Iron Zone's advantage is in-app purchases (none vs 13). On price, device support and iOS requirement 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. Iron Zone asks for nothing beyond the download.

UpkeepUpdate frequency

GymBook ・ Strength Training ships an update weekly, Iron Zone every 4 weeks. The most recent releases landed on October 26, 2026 and October 2, 2026 respectively.

Scorecard5 real differences · 5 level
GymBook ・ Strength Training versus Iron Zone: the parameters behind the verdict, then further details
ParameterGymBook ・ Strength TrainingIron Zone
PriceFreeFree
Rating4.8 (2.4K ratings) — better—
Positive reviews94.6% of reviews — better0.0% of reviews
Number of ratings2.4K — better—
Update frequencyWeekly — betterEvery 4 weeks
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS16.415.0 — better
Further details — not scored
Size393 MB40 MB
Age rating4+12+
DeveloperAppwise GmbHIron Journal Labs

Customer experience

GymBook ・ Strength Training

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

Iron Zone

Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

Iron Zone

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
None

Iron Zone

No in-app purchases

Questions

Is GymBook ・ Strength Training free?
GymBook ・ Strength Training is free to download, with in-app purchases available.
Is Iron Zone free?
Iron Zone is free to download, with no in-app purchases.
Do GymBook ・ Strength Training or Iron Zone have ads?
Iron Zone shows ads; GymBook ・ Strength Training does not.
Which is updated more often, GymBook ・ Strength Training or Iron Zone?
GymBook ・ Strength Training ships an update weekly, and Iron Zone every 4 weeks. Most recently, GymBook ・ Strength Training was updated on October 26, 2026 and Iron Zone on October 2, 2026.

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