OS vs TRI STUDIO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OS
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Download the OS-1 Gym app to easily book classes and manage your fitness experience - anytime, anywhere. Make a reservation, get added to a wait list, check your profile and membership status, and more – all from your device. Visit https://www.os1dxb.com/ to learn more.
TRI STUDIO
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Welcome to the TRI STUDIO members app! Download our app to plan and book your fitness classes. At the click of a button, you can view class schedules, sign up for classes and even invite a friend to join you! With the app, you’ll keep in touch with TRI STUDIO staff and coaches, receive notifications, news and reminders.
Screenshots
Verdict
The clearest difference is update cadence: OS at every 3 months against TRI STUDIO's every 15 months. OS also leads on iOS requirement (13.5 vs 15.1). 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.
OS ships an update every 3 months, TRI STUDIO every 15 months. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.
| Parameter | OS | TRI STUDIO |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months — better | Every 15 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.5 — better | 15.1 |
| Further details — not scored | ||
| Size | 14 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | OS ONE FITNESS LLC | Arbox LTD |
In-app purchases
OS
No in-app purchases
TRI STUDIO
No in-app purchases
