GymSync vs O.N.E
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.
O.N.E
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The ONE Academy is designed to provide a seamless coaching experience, enabling the team to programme personalised nutrition plans while keeping clients accountable every step of the way. Specialising in educating clients on how to live and maintain a healthy, balanced lifestyle, The ONE Academy empowers individuals with the knowledge and tools they need to succeed long-term. The app helps clients track their progress, stay on top of their nutrition and daily habits, log important actions, and check in with their coach to ensure they are consistently moving towards their goals. Key Features for The ONE Academy Performance Tracking – Monitor client progress with intuitive tracking tools that allow you to assess habits, nutrition, and milestones to make data-driven coaching decisions. Custom Forms – Collect valuable client information, including health history, preferences, and goals, to personalise their coaching journey for optimal results. Nutrition Planning – Create and assign personalised meal plans to clients, set macro targets, and provide nutritional guidance to support their goals. Clients can log their meals and stay accountable with their nutrition. Document Vault – Securely store and share important resources, nutrition guides, and other key documents, keeping everything in one place for easy access. Client Check-ins – Conduct regular progress check-ins, where clients log their results, upload progress photos, and receive direct feedback to refine their nutrition and lifestyle strategies. Roadmaps for Goal Setting – Structure client journeys with clear step-by-step phases, ensuring they have a clear path towards achieving their nutrition and lifestyle goals. The ONE Academy app is designed exclusively for clients working directly with the ONE team, ensuring a personalised and results-driven coaching experience. Clients can only join via an invite from The ONE Academy, ensuring a structured, goal-oriented approach tailored to their needs.
Screenshots
Verdict
The clearest difference is update cadence: GymSync at weekly against O.N.E's every 3 weeks. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GymSync ships an update weekly, O.N.E every 3 weeks. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.
| Parameter | GymSync | O.N.E |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 29.4% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 40 MB | 56 MB |
| Age rating | 4+ | 17+ |
| Developer | SD17 | Ryan Smith |
In-app purchases
GymSync
No in-app purchases
O.N.E
No in-app purchases









