Comparison

Nautilus Plus vs Gemel

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

Gemel

Features
Read full description

Track calories and protein in seconds. Gemel tracks the two numbers that matter, calories and protein, and paces them through your day, so you always know whether you're on track while there's still time to fix it. No food database, no account, no feed. A TARGET THAT MOVES WITH YOUR DAY A daily number is only useful if you know how much of it you were meant to have used by now. Gemel draws a pace line that climbs from the hour you wake to the hour you turn in, so a number at 2pm reads as ahead or behind, not just as a number. Cutting or building: your calorie number is a ceiling or a floor, and the words change to match. SECONDS, NOT A FOOD DIARY The fastest way to log a meal is to type the number you already know. Your usual amounts are one tap, ranked by what you reach for and when. Anything else, the pad adds up as you type, with the running total in view. On an iPhone with Apple Intelligence you can also describe the meal in a sentence: Apple's on-device model estimates it and fills the pad for you to check, and nothing is logged until you say so. Log from the Lock Screen, Control Center, the Action button, your Apple Watch or Siri without opening the app. No barcode scanner, on purpose. DIFFERENT GOALS, SAME STREAK Pair with a friend and you start a second streak, one that only continues on days you both hit your goals. She's cutting, you're building; neither of you sees the other's figures, only whether today was hit. One person per pairing, as many pairings as you like. GEMELS A day where both bars cap is a gemel. Streaks, comebacks and awards build from there, on your own and with each friend. ALSO • Home Screen and Lock Screen widgets, Control Center controls • A watch app with complications • Your data stays on your devices and in your iCloud • In English, Portuguese (Brazil), French (Canada) and Spanish Your first month is free, from the moment you install. After that Gemel is a subscription, and the price is shown in the app before you commit. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getgemel.com/privacy

Screenshots

Nautilus Plus4 screens
Gemel4 screens

Verdict

The call

The clearest difference is in-app purchases: Nautilus Plus at none against Gemel's 2. Nautilus Plus also leads on iOS requirement (15.1 vs 18.0). Gemel's advantage is update cadence (every 3 days vs every 5 weeks). On price, ads and device support 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. Gemel sells 2 in-app purchases, starting at $4.99 per month. Nautilus Plus asks for nothing beyond the download.

UpkeepUpdate frequency

Nautilus Plus ships an update every 5 weeks, Gemel every 3 days. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Nautilus Plus versus Gemel: the parameters behind the verdict, then further details
ParameterNautilus PlusGemel
PriceFreeFree
Rating3.0 (7 ratings) — better—
Positive reviews25.4% of reviews—
Number of ratings7 — better—
Update frequencyEvery 5 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS15.1 — better18.0
Further details — not scored
Size62 MB24 MB
Age rating12+4+
DeveloperNautilus PlusChesley Brown

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

Gemel

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Nautilus Plus

No in-app purchases

2 purchases

Gemel

Subscriptions2
  • Monthly1 Month trial$4.991 Month
  • Annual1 Month trial$29.991 Year

Questions

Is Nautilus Plus free?
Nautilus Plus is free to download, with no in-app purchases.
Is Gemel free?
Gemel is free to download, with in-app purchases available.
Do Nautilus Plus or Gemel have ads?
Neither Nautilus Plus nor Gemel shows ads.
Which is updated more often, Nautilus Plus or Gemel?
Nautilus Plus ships an update every 5 weeks, and Gemel every 3 days. Most recently, Nautilus Plus was updated on October 13, 2026 and Gemel on October 14, 2026.

Other comparisons