Comparison

Nautilus Plus vs Epilog

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Nautilus Plus

Manage your gym membership, track workouts, and access personalized fitness and nutrition plans. View schedules, book appointments, and sync data from various fitness trackers. Stay connected with trainers and nutritionists through integrated messaging.

Highlights
  • Virtual membership card
  • Workout tracking and program access
  • Sync data from fitness trackers
  • Nutrition plan and tools
  • Group exercise class schedules
  • Appointment booking
  • Integrated messaging with trainers
Features
Read full description

You can now easily access all your Nautilus Plus membership information on your mobile or smartphone. Things like your virtual membership card, group exercise schedules, appointments with your personal trainer or nutritionist, record of workouts, your workout program, and more. Virtual Membership Card • Present your membership card by simply showing your phone Workout Session • Fix your weekly workout objective • Consult your weekly workout average • Consult your workout session total • Record of workouts (day, hour, club) • Sync your data from any trackers (Apple Health, Garmin, Fitbit, Strava, etc.) Workout Program • Consult your workout program • Complete your Fitness and Lifestyle Evaluation questionnaire • Consult the results of your Fitness and Lifestyle Evaluation questionnaire • Enter data during your workout session (duration, calories burned, number of reps, weights used) • Consult your workout data • Consult your workout calendar • Communicate with your personal trainer via integrated messaging Nutrition • Consult your nutrition plan • Consult different tools such as portion guide, your Healthy Plate, your Grocery List • Communicate with your nutritionist via integrated messaging Group Exercise Classes and Supervised Group Training Schedules • All class schedules in all clubs within our network • Refined search by type of class • Online registration Appointments • Book an appointment with your personal trainer, your nutritionist, your osteopath, or your massotherapist BOOMERANG Membership • Consult your accumulated credits

About

Epilog

Track your weightlifting progress with detailed metrics like weight, reps, and tempo. Analyze your performance muscle by muscle and set up circuit training routines. Measure body composition and sync with Apple Health.

Highlights
  • Record sets, reps, tempo, and rest
  • Analyze progression by muscle group
  • Create and track circuit training
  • Estimate 1RM and track volume
  • Log body measurements and photos
  • Exercise library with animations
Features
Read full description

The workout tracker that shows you're making progress. Epilog logs every set in seconds (weight, reps, tempo, RPE) and turns your workouts into a clear read on your progress, exercise by exercise and muscle by muscle. LOG FAST, STAY IN THE ZONE • Check off a set and the rest timer starts on its own • Rest timer on the Dynamic Island and the Lock Screen • Supersets, drop sets, warm-up sets and sets to failure • Tempo, RPE and notes on every exercise • Reorder or swap exercises in one tap YOUR PROGRESS, MUSCLE BY MUSCLE • See how much work each muscle gets, week after week • A muscle map shows where you train hard and where you lag behind • Every exercise has its own curve: estimated 1RM, top set, volume, reps • Personal records detected automatically and kept with their date 300+ EXERCISES, EXPLAINED • Instructions and common mistakes for each movement • Filter by muscle and equipment • Can't find one? Create your own CIRCUITS AND ROUTINES • HIIT circuits on the clock, EMOM, AMRAP, or free rounds • Build your routines, sort them into folders, and start from ready-made programs TRACK MORE THAN THE BAR • Body weight, body fat and circumferences, charted over time • Progress photos, compared side by side (Pro) • Calculators built in: plates, 1RM, percentage of 1RM, RPE, warm-up sets • Streaks and achievements to keep you coming back MADE FOR IPHONE • Home Screen widgets • Apple Health sync • Kilograms or pounds • Available in 12 languages ON APPLE WATCH (FIRST RELEASE) • Follow your workout and log your sets from your wrist • Rest timer and live heart rate Epilog is free to use, with unlimited workout logging. Go Pro for your full history, every stat and widgets. Try Pro free for 14 days. Download Epilog and make every workout count. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Nautilus Plus4 screens
Epilog4 screens

Verdict

The call

The clearest difference is review sentiment: Epilog at 90% against Nautilus Plus's 25%. Epilog also leads on rating (5.0 vs 3.3) and update cadence (every 6 days vs every 5 weeks). Nautilus Plus's advantage is in-app purchases (none vs 6) and ratings volume (8 vs 2). On price, ads, 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. Epilog sells 6 in-app purchases, starting at $4.99 per month. Nautilus Plus asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Epilog holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews point the same way: 25% of Nautilus Plus's written reviews are positive against 90% of Epilog's.

UpkeepUpdate frequency

Nautilus Plus ships an update every 5 weeks, Epilog every 6 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Nautilus Plus versus Epilog: the parameters behind the verdict, then further details
ParameterNautilus PlusEpilog
PriceFreeFree
Rating3.3 (8 ratings)5.0 (2 ratings) — better
Positive reviews25.4% of reviews90.5% of reviews — better
Number of ratings8 — better2
Update frequencyEvery 5 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPodiPhone, iPod, Apple Watch
Requires iOS15.115.1
Further details — not scored
Size62 MB115 MB
Age rating12+4+
DeveloperNautilus PlusFit Mass

Customer experience

Nautilus Plus

All ratings7 ratings
Positive42.9%
Neutral14.3%
Negative42.9%
Written reviews67 reviews
Positive25.4%
Neutral11.9%
Negative62.7%

Epilog

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews42 reviews
Positive90.5%
Neutral7.1%
Negative2.4%

Bugs and requests

Nautilus Plus

Reported bugs

76 issues
  • Reservations don't work
  • Messaging doesn't work
  • Gym crowd status not showing
  • App constantly logs out
  • Password reset emails not sent
Show 71 more
  • App connects to multiple tracking websites on login
  • Servers down for over a week
  • Error message: problem with the server
  • App crashes constantly
  • Login problems
  • Server issues
  • App not working half the time
  • Login issues every week
  • Error with Nautilus server
  • App crashes, error codes
  • Cannot load info or card
  • System is down
  • App not showing member card
  • Hard to login
  • DNS requests to Google advertising servers
  • Prevents login with ad blocker
  • Lost history of weights
  • Average number of weekly visits disappeared
  • Cannot log in
  • Error code: 'Error Try again later'
  • Server error
  • App is generally very slow
  • Workout programs not saved locally
  • Not working with the latest iOS
  • Error: 'Cannot read property ‘data’ of undefined'
  • Cannot access app
  • Boomerang doesn't work sometimes
  • Issues with client card and Boomerang
  • Does not work on iPhone 14 Pro Max
  • App unable to function on new iPhone
  • Impossible to finish workout
  • Error message: 'error with Nautilus Plus server'
  • Old programs harder to find
  • Membership card needs to be reloaded to wallet
  • Weight changes don't always save
  • Opening other app resumes workout a few sets back
  • Messages sent are deleted/not showing up
  • New version is worse than the old one
  • New update is not optimal
  • App is terribly slow
  • Resets randomly
  • Membership card difficult to access
  • Cannot add card to phone wallet
  • App always bugs when opened
  • Cannot install membership card in Apple Wallet
  • Buggy, crashes 99% of the time
  • Cannot open menu on the right-hand side
  • Top part overlaps phone status bar
  • Lack of retention for orientation to display membership card
  • Interface not adapted for Face ID phones
  • Entering values in workout program is frustrating
  • App not updated for new iPhone displays
  • Information not visible due to Dynamic Island
  • Impossible to add membership card to wallet app
  • Screen not sized properly for various iPhones
  • App not updated for 2 years
  • Buttons and menus not optimized for iPhone 14
  • Cannot add membership card to wallet
  • New update is worse than the previous version
  • More actions needed to execute training plan
  • UX needs review
  • Cannot add card to Apple wallet
  • App is not adapted to recent iPhones
  • Doesn't run easily
  • Apple Pay feature for card is impossible to make work
  • Multiple screens won't load
  • Add to Apple wallet is broken
  • Scanning still works but that's it
  • App is junk and abandoned
  • Doesn't work
  • Previous version was better

Requested features

16 requests
  • Add Apple Watch app for tracking workouts
  • Bring back average weekly visits on homepage
  • Allow users to choose preferred branches
  • Enable in-app membership renewal
  • Allow users to customize home screen buttons
Show 11 more
  • Add dark mode
  • Improve workout timer functionality
  • Allow users to disable auto-playing videos
  • Add option to save workout programs locally
  • Make app compatible with newer iPhone screens
  • Improve navigation for gym hours and attendance
  • Allow multiple preferred branches
  • Add ability to prepare workout entry during rest periods
  • Improve graphical clarity of the app
  • Allow users to add membership card to Apple Wallet
  • Improve account creation process

Epilog

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Nautilus Plus

No in-app purchases

6 purchases

Epilog

Subscriptions6
  • Epilog Pro (Mensuel)14 Days trial$4.991 Month
  • Epilog Pro (Monthly)7 Days trial$6.991 Month
  • Epilog Pro (Monthly)14 Days trial$6.991 Month
Show 3 more
  • Epilog Pro (Annual)14 Days trial$22.991 Year
  • Epilog Pro (Annual)7 Days trial$29.991 Year
  • Epilog Pro (Annual)14 Days trial$29.991 Year

Questions

Is Nautilus Plus free?
Nautilus Plus is free to download, with no in-app purchases.
Is Epilog free?
Epilog is free to download, with in-app purchases available.
Which has better reviews, Nautilus Plus or Epilog?
Epilog is rated higher. Nautilus Plus averages 3.3 out of 5 from 8 ratings, while Epilog averages 5.0 from 2 ratings.
Do Nautilus Plus or Epilog have ads?
Neither Nautilus Plus nor Epilog shows ads.
Which is updated more often, Nautilus Plus or Epilog?
Nautilus Plus ships an update every 5 weeks, and Epilog every 6 days. Most recently, Nautilus Plus was updated on October 24, 2026 and Epilog on October 31, 2026.

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