SLT vs Heatwise New
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.
Heatwise New
Book your next sauna session with this app. Browse studio locations, view class schedules, and manage your reservations. Purchase classes and workshops, and update your account details all in one place.
- Find and book sauna sessions
- View studio locations
- Check class schedules
- Review existing reservations
- Purchase classes and workshops
- Manage your account
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The official App of Heatwise. Download the App today to find and book your next shvitz. From the App you can view studio locations and class schedules, review existing reservations, purchase classes and workshops, manage your account and more. Discover more about Heatwise @heatwiseyoga on Instagram.
Screenshots
Verdict
SLT and Heatwise New both sit at 5.0 stars, but that hides the real split: 100% of Heatwise New's written reviews are positive against 71% of SLT's. SLT's advantage is monetization model (ad-supported vs free with in-app purchases) and ratings volume (3.3K vs 674). On price, rating, update cadence and ads 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.
On the App Store both sit at effectively the same score — 5.0 for SLT against 5.0 for Heatwise New. Both are backed by a comparable volume of ratings — 3.3K and 674 respectively. Written reviews are what separate them: 71% of SLT's written reviews are positive against 100% of Heatwise New's.
SLT ships an update every 4 weeks, Heatwise New monthly. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.
| Parameter | SLT | Heatwise New |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3.3K ratings) | 5.0 (674 ratings) |
| Positive reviews | 71.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 3.3K — better | 674 |
| Update frequency | Every 4 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 38 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Mariana Tek Corporation | Heatwise |
Customer experience
SLT
Heatwise New
In-app purchases
SLT
No in-app purchases
Heatwise New
No in-app purchases
