X vs kor FIT SF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
X
Book fitness classes, manage waitlists, and purchase class packages. Experience high-intensity, low-impact cardio and strength training designed to burn fat and build muscle efficiently.
- Book classes
- View waitlist status
- Purchase class packages
- Pre-buy goodies
- High-intensity cardio
- Low-impact strength training
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Your new best friend to book classes, see waitlist status, buy packages, pre-buy goodies, and more! The Bay Area's most efficient CARDIO & STRENGTH classes to burn fat, kick-start metabolism, and build strength. Classes are intense on the muscles, and zero to low impact on your body. It's the perfect balance. 30 min in our beat-based xCLIMB class will make you sweat and leave you shredded. 40 min in xBURN, our award winning high intensity pilates class, will strengthen, lengthen and tone your muscles.
kor FIT SF
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Download the korFIT App today to plan and schedule your classes! From this mobile App, you can view class schedules and sign up for classes as well as view the studio’s location. Optimize your time and maximize the convenience of signing up for classes from your device! Download this App today!
Screenshots
Verdict
The clearest difference is update cadence: X at every 3 weeks against kor FIT SF's every 10 months. kor FIT SF's advantage is iOS requirement (14.0 vs 16.0). On price and in-app purchases 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.
X ships an update every 3 weeks, kor FIT SF every 10 months. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.
| Parameter | X | kor FIT SF |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (445 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 445 — better | — |
| Update frequency | Every 3 weeks — better | Every 10 months |
| Ads | No | — |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone — better | — |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 187 MB |
| Age rating | 4+ | 4+ |
| Developer | X-Core, LLC | kor fit sf llc |
In-app purchases
X
No in-app purchases
kor FIT SF
No in-app purchases
