Comparison

GymBook ・ Strength Training vs RepXP

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

RepXP

Automate your strength training progression with this app. It automatically applies progressive overload, tracks your effort with RPE/RIR, and offers phone-free logging on Apple Watch. Import your existing workout data and focus on lifting, not manual adjustments.

Highlights
  • Automatic progressive overload
  • Minimal workout logging
  • Effort tracking (RPE/RIR)
  • Standalone Apple Watch app
  • Workout import from other apps
  • Workout forecasts and alerts
Features
Read full description

Stop guessing your next weight, and stop trusting apps that guess it for you. RepXP tells you what to lift next, shows you why, and only suggests weights your gym actually has. • Every change explains itself: see the new weight or reps and the reason under it before you start. • Weights your gym actually has: set up your plates, dumbbells and machines, and every increase lands on a load you can make. • A safe way back after a break: time off lowers the weights, then builds them back up to where you were. No account. No ads. No paywall at sign-up. Logging is free, and eligible new subscribers can try Pro free for a month. NEW IN 4.0 Every screen, from your workout to the Apple Watch app, has been rebuilt in a bolder design that is easy to read mid-set. Progress photos now sync through iCloud, import from your photo library with their original dates, and turn into a before and after image you can share. PROGRESSION YOU CAN TRUST Define your progression once. RepXP adds reps within your range, moves the weight when you are ready, reacts to the effort you log, and suggests a deload when progress stalls. Each change is shown with its reason, and any change can be reverted with one tap. A ROUTINE BEFORE YOUR FIRST SESSION Answer a few questions about your training days, how long you have, your goal and your equipment, and RepXP writes the routine, with a starting weight on every exercise. Every number is one tap from being changed. FAST WORKOUT LOGGING • Confirm sets with one tap • Track RPE or RIR by set, exercise, or session • Automatic rest timers with Live Activities • Plate calculator for bars, machines, weight stacks and dumbbells • Weight, rep, volume and estimated 1RM records detected as you lift TRAIN PHONE-FREE ON APPLE WATCH Start and finish complete workouts from your wrist. Log sets, change reps or weight, see the next set's weight and reps while you rest, and feel a tap when rest is over. During cardio, see live heart rate and your current zone. BRING YOUR TRAINING WITH YOU Import routines and history from Strong, Hevy, or Bolt, or an AI-generated routine from a RepXP link or CSV. Export everything as a readable file for a coach, an AI tool, or a spreadsheet. FREE PLAN • Unlimited workouts, routines and workout history • A routine built from a few answers • A preview of what Autopilot would change • Strength, cardio and flexibility tracking • 400+ exercises and unlimited custom exercises • Standalone Apple Watch app • RPE and RIR effort logging, recovery and stress trends • XP, levels, badges and streaks • Progress photos with iCloud sync and a before and after image • Apple Health and iCloud sync, widgets and calculators • Charts and analytics for the last 30 days REPXP PRO • Autopilot progression and smart deloads • Comeback after a break, with a gradual build back up • Effort-aware progression, workout forecasts and progression-ready alerts • Supersets and tri-sets • All-time charts and analytics • Personal-record and muscle-group analytics • Strength standards, body trends and training heatmap • Progress photo video and GIF, training stats on your before and after, no RepXP branding • AI training reports and recovery insights on supported devices Eligible new subscribers can start with a 1-month free trial. Cancel anytime. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://repxp.app/privacy

Screenshots

GymBook ・ Strength Training4 screens
RepXP4 screens

Verdict

The call

The clearest difference is ratings volume: GymBook ・ Strength Training at 2.4K against RepXP's 1. GymBook ・ Strength Training also leads on iOS requirement (16.4 vs 18.0). RepXP's advantage is rating (5.0 vs 4.8). On price, update cadence, ads and in-app purchases 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 RepXP sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

RepXP holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: GymBook ・ Strength Training has 2.4K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
GymBook ・ Strength Training versus RepXP: the parameters behind the verdict, then further details
ParameterGymBook ・ Strength TrainingRepXP
PriceFreeFree
Rating4.8 (2.4K ratings)5.0 (1 ratings) — better
Positive reviews94.6% of reviews—
Number of ratings2.4K — better1
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS16.4 — better18.0
Further details — not scored
Size393 MB41 MB
Age rating4+12+
DeveloperAppwise GmbHCode Works

Customer experience

GymBook ・ Strength Training

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

RepXP

All ratings1 ratings
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

RepXP

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

RepXP

Subscriptions2
  • RepXP Pro Monthly1 Month trial$3.991 Month
  • RepXP Pro Yearly1 Month trial$29.991 Year
One-time1
  • Lifetime Pro$89.99

Questions

Is GymBook ・ Strength Training free?
GymBook ・ Strength Training is free to download, with in-app purchases available.
Is RepXP free?
RepXP is free to download, with in-app purchases available.
Which has better reviews, GymBook ・ Strength Training or RepXP?
RepXP is rated higher. GymBook ・ Strength Training averages 4.8 out of 5 from 2.4K ratings, while RepXP averages 5.0 from 1 ratings.
Do GymBook ・ Strength Training or RepXP have ads?
Neither GymBook ・ Strength Training nor RepXP shows ads.
Which is updated more often, GymBook ・ Strength Training or RepXP?
GymBook ・ Strength Training ships an update weekly, and RepXP weekly. Most recently, GymBook ・ Strength Training was updated on October 24, 2026 and RepXP on October 24, 2026.

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