Sjøsterk vs XT.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sjøsterk
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Bruk telefonen til å booke, kansellere etter sette deg på venteliste til gruppetimer hos ditt treningssenter. Den kan også brukes til å åpne døren inn til senteret der det er støtte for det. - Valgfri kalenderhendelse ved booking - Nyheter fra ditt senter
XT.
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Book your class, check in at the door, and follow every session. XT is the member app for XT, a functional fitness gym in Oslo. It's your whole membership in one place. BOOK CLASSES See the week at a glance and book in one tap, from the daily session to Hyrox. Class full? Join the waitlist and we'll tell you the moment a spot opens. Plans change, so cancelling is just as quick. CHECK IN Check in when you walk through the door. Turn on automatic check-in and the app does it for you when you reach the gym. Your location is only checked against the gym's at that moment, and it's never stored. YOUR TRAINING See today's session, log your workout, and watch your streak grow. Follow your week at a glance, or run your own session in open gym. THE FEED Photos, videos and news from your coaches and your gym. Comment on a post and cheer on the people you train with. YOUR MEMBERSHIP Your membership card, payments and freeze, all in one place. Change your plan right from the app. Pay by card right in the app. MESSAGES Got a question? Message the gym or your coach. Ready for one-to-one work? Book time with a personal trainer. XT is for members of XT. Everything you pay for is a real thing at the gym: your training, your classes, your membership. The app is in Norwegian and English, and you can switch anytime in Settings.
Screenshots
Verdict
The clearest difference is update cadence: XT. at every 2 days against Sjøsterk's every 2 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.
Sjøsterk ships an update every 2 weeks, XT. every 2 days. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.
| Parameter | Sjøsterk | XT. |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 80 MB | 151 MB |
| Age rating | 4+ | 4+ |
| Developer | Sjøsterk | Memberflow AS |
In-app purchases
Sjøsterk
No in-app purchases
XT.
No in-app purchases









