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75
BU Score
Strong

GymBook ・ Krafttraining

4.8 ✍️ Editor
✍️ BU Analytics Review

GymBook ・ Krafttraining is an iOS app from Appwise GmbH in the Health & Fitness category, currently rated 4.8★ across 2,353 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.

Our BU Score puts it at 75Strong (healthy traction). For a Health & Fitness app, that means healthy traction.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

creator

📊 Performance Tracking LIVE

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Rating
Reviews
Forecast Revenue / mo
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💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 15 of 15 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Excellent rating (4.8★)METRIC
+$2,200
worth every pennyREVIEW
+$2,000
bugsREVIEW
−$1,800
5 starREVIEW
+$1,800
great valueREVIEW
+$1,600
excellent appREVIEW
+$1,500
Low install base (2,353 ratings)METRIC
+$1,500
Mature app (12y old)METRIC
+$1,500
highly recommendREVIEW
+$1,400
slowREVIEW
−$1,200
annoying adsREVIEW
−$1,100
too expensiveREVIEW
−$1,000
support teamREVIEW
+$900
Ad-supported / freemiumMETRIC
+$600
Localized (7 languages)METRIC
+$600
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Mar 25
Apr 25
May 25
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Mar 26

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 516 MB🔞 4+📱 iOS 16.4+🔖 v7.0.36🔄 updated 1w ago🌐 EN, FR, DE, IT, PT +2📂 Health & Fitness💰 Paid🚀 Launched 2013 (12y old)

📝 About this app

Here is GymBook, your fitness app to efficiently create, log and analyze your workouts at the gym - all in a beautiful and innovative 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.

🆕 What's New · v7.0.36

⎯ In this release
Added 3 additional exercises, which are available with GymBook Pro:
- Machine Belt Squats
- Machine Belt Sumo Squats
- Machine Belt Bulgarian Split Squats

⎯ 7.0.35
Under-the-hood improvements and performance optimizations. Preparations for upcoming features and further enhancements.

⎯ 7.0.34
Added 5 additional exercises, which are available with GymBook Pro:
- Smith Machine Back Presses
- Standing Smith Machine Back Presses
- Smith Machine Front Presses
- Standing Smith Machine Front Presses
- Squats (without equipment)

⎯ 7.0.30
Target region and equipment filters are now saved. When returning to the screen or reopening the app, your last selected filters are restored. To reset the filters, select 'Any region' or 'Any equipment' respectively.

⎯ 7.0.27
Editing workouts and exercises within a workout has been slightly adjusted. In particular, editing exercises now features a redesigned, minimizable heat map sheet in a full-width view showing front and back simultaneously, with the ability to toggle between strength, cardio, and stretching. Comparing muscle distribution while building a workout is now easier. The heat map sheet also introduces a subtle Liquid Glass look that aligns with iOS 26.

In addition, heat maps in workout detail screens now support all exercise types and allow toggling between them. The small heat map thumbnails show the heat map of the exercise type that contributes most to the workout, and if it is not strength (for example, cardio or stretching), a corresponding icon is shown accordingly.

⎯ 7.0.26
Under-the-hood improvements and performance optimizations. Preparations for upcoming features and further enhancements.

⎯ 7.0.25
When opening line graphs from a screen with logs (for example via the 'History' tab), the end date is now dynamic, making it easier to review graphs where the most recent log is in the past.
A UI issue when changing the period has also been fixed.

⎯ 7.0.23
GymBook for Apple Watch now allows deleting logs from today.
Further performance and user interface improvements.

⎯ 7.0.21
Radar charts have been added, offering a new way to visualize how training is distributed across regions and muscle groups.

⎯ 7.0.19
Preparations for radar charts (coming soon). Doughnut chart groupings are now remembered, and data is displayed in a sorted order instead of the previous random order.

⎯ 7.0.17
Added 4 additional exercises, which are available with GymBook Pro:
- Smith Machine Hip Thrusts
- Sissy Squats
- Plate Sissy Squats
- Kneeling Sissy Squats

⎯ 7.0.13
When looking at logs (for example organized by workout, exercise, date, target, or all), skipped logs can now be hidden.

Furthermore, the "Workout Matrix" has been updated to align with Apple's Liquid Glass design language.


We work really hard to improve GymBook and make your workout experience better. Do you want to support the further development of GymBook? Please consider providing a 5-star rating in the App Store, which really helps in improving the visibility of the app and gives us a motivation boost:-). And if there is something you don't like about GymBook, please let us know using the feedback function in the app. Many thanks!

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
GymBook ・ Krafttraining
Developer
Appwise GmbH
Bundle ID
salvatore.f.rocca.GymBook
App Store URL
Open in App Store
Category
Health & Fitness
Content rating
4+
Languages
EN, FR, DE, IT, PT, RU, ES

Company

Website
www.gymbookapp.com
Tagline
GymBook - Strength training planner, logger and analyzer
Description
Gym Book is your strength training planner, logger and analyzer. You can create and manage your workouts, log your progress and analyze your performance.
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$23.6K/mo
Top-grossing rank
Outside top 100 in US Health & Fitness
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
hello@gymbookapp.com
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth2,353 ratings+-1% lifetimeShow 3-year history estimate ▾May 2023Mar 2025May 2026
Tracked (57 weeks) Pre-tracking estimate (36 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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