GymSync vs Kahunas
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GymSync
Easily book and manage fitness classes at your gym. View schedules, reserve spots, and receive timely reminders. Get instant notifications for cancellations and reserve list openings.
- View class timetables
- Book and cancel classes
- Join reserve lists
- Class reminders
- Instant notifications
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PLEASE NOTE THIS APP WILL ONLY WORK IF YOUR GYM IS CURRENTLY USING GYMSYNC. Book fitness classes with just the touch of a button, anytime, anywhere! If your gym is already signed up to GymSync, download the app and you’re all set to view timetables, book and manage your fitness classes. Contact your gym to find out of they're signed up to GymSync. Features * View class timetables for your gym * Book and cancel your attendance for your favourite classes * Add yourself to a reserve list for classes that are fully booked * Get timely reminders for your classes, so you never forget your kit! * Get instant notifications for reserve place availability, and class cancellations. On the go, instant, hassle free class booking.
Kahunas
This app connects clients with their online coaches. Coaches can manage clients, update plans, and communicate directly. Clients can log workouts, track nutrition, and message their coach.
- Client management
- Workout and diet plan updates
- Check-in tracking
- Direct messaging
- Workout logging
- Nutrition plan viewing
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Online Coaches - Manage your clients on the go. - Update workout or diet plans. - View check-ins. - Message your clients. Clients - Check-in in the app. - Message your coach. - Log your workouts. - View your nutrition & supplement plans. Terms of use: https://kahunas.io/terms-conditions Privacy policy: https://kahunas.io/privacy
Screenshots
Verdict
The clearest difference is rating: GymSync at 5.0 against Kahunas's 3.3. GymSync also leads on in-app purchases (none vs 1) and update cadence (weekly vs monthly). Kahunas's advantage is ratings volume (73 vs 1). 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
Both are free to download. Kahunas sells 1 in-app purchase, starting at $95.99 per month. GymSync asks for nothing beyond the download.
GymSync holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Kahunas has 73 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 29% of GymSync's written reviews are positive against 18% of Kahunas's.
GymSync ships an update weekly, Kahunas monthly. The most recent releases landed on September 11, 2026 and September 22, 2026 respectively.
| Parameter | GymSync | Kahunas |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.3 (73 ratings) |
| Positive reviews | 29.4% of reviews — better | 18.3% of reviews |
| Number of ratings | 1 | 73 — better |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 38 MB | 51 MB |
| Age rating | 4+ | 17+ |
| Developer | SD17 Limited | Mark Covey-Fox |
Customer experience
GymSync
Kahunas
Bugs and requests
GymSync
Not enough reviews yet to summarise bugs or requests.
Kahunas
Reported bugs
26 issues- App crashes when locking phone
- Crashes during workout logging
- Login screen freezes
- Barcode scanner launches blank screen
- Rest timer displays incorrect duration
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- Workout data disappears after app exit
- Nutrition data calculations incorrect (off by 150-200 calories)
- Food entries randomly removed from diary
- App logs out randomly
- Check-in data erases when re-entering
- Keyboard jumps page when filling workout data
- Workout ordering forces wrong selection
- Unable to view exercises correctly
- Infinite loading on customer programs
- Password not remembered/cannot be changed
- App-breaking bugs with slow support response
- Payment info failure locks account
- Blue circle of death (complete data loss)
- Workout session disappears if client misses scheduled time
- Notifications constantly pop up
- Unable to create account/sign up issues
- App freezes when viewing longer text in workouts
- Inconsistent date display for workouts and check-ins
- Unable to select workouts after update
- Cannot edit daily check-ins
- Syncing issues between devices
Requested features
18 requests- Apple Watch integration and complications
- MyFitnessPal integration
- Save/reuse meal feature
- Auto-save functionality for workouts
- Weight tracking widget
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- Cardio and step tracking from Apple Health
- Better notification settings/customization
- Drop set logging within sets
- Exercise order switching capability
- Meal filter options
- Weekly macro averages calculation
- Persistent chat history (not auto-delete)
- Reply functionality for check-ins
- Dark mode option
- Better dashboard home screen
- PDF viewing in-app
- Multi-device login capability
- Offline mode
In-app purchases
GymSync
No in-app purchases
Kahunas
- Monthly subscription$95.991 Month
Questions
Is GymSync free?
Is Kahunas free?
Which has better reviews, GymSync or Kahunas?
Do GymSync or Kahunas have ads?
Which is updated more often, GymSync or Kahunas?
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