SLT vs CORE40 AMSTERDAM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SLT
Book and manage fitness classes directly from your phone. View studio schedules, purchase class packages, and access your account information. Stay connected with the studio through social media links.
- Book classes
- View studio schedules
- Purchase class packages
- Manage account
- View reservations
- Find studio locations
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This is the official App for SLT NYC. With this App, you can find and book your SLT classes, view studio locations and schedules, buy and book your classes, as well view your existing reservations and manage your account. Find us on Instagram at @sltnyc and check out our site at sltnyc.com.
CORE40 AMSTERDAM
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Download the CORE40 Amsterdam App today to plan and schedule your classes! From this mobile App you can view class schedules, sign-up for classes, as well as view the studio’s location information. Optimize your time and maximize the convenience of signing up for classes from your device! Download this App today! Check out our website at core40.nl for more info.
Screenshots
Verdict
SLT and CORE40 AMSTERDAM are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
SLT ships an update every 4 weeks, CORE40 AMSTERDAM monthly. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.
| Parameter | SLT | CORE40 AMSTERDAM |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3.3K ratings) — better | — |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 3.3K — better | — |
| Update frequency | Every 4 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 38 MB | 197 MB |
| Age rating | 4+ | 4+ |
| Developer | Mariana Tek Corporation | CORE40 CENTRUM B.V. |
In-app purchases
SLT
No in-app purchases
CORE40 AMSTERDAM
No in-app purchases
