Engage in 30-minute HIIT classes designed for all fitness levels, available both in-studio and on-demand. Plan your schedule, sign up for sessions, and explore current promotions and merchandise.
RSTR by FBRK, LLC



22+ iOS apps curated and reviewed
Finding the right rstr apps can be overwhelming with so many options. We've analyzed 22+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (9) | Yes | No | May 2026 | ||
| 2 | Free | — | No | No | Sep 2026 | ||
| 3 | Free | 5.0★ (1) | No | No | Oct 2026 | ||
| 4 | Free | — | No | Yes | Oct 2026 | ||
| 5 | Free | — | No | No | Oct 2026 | ||
| 6 | Free | 4.9★ (74) | No | No | Oct 2026 | ||
| 7 | Free | 5.0★ (1) | No | No | May 2026 | ||
| 8 | Free | — | Yes | No | Aug 2026 |



Engage in 30-minute HIIT classes designed for all fitness levels, available both in-studio and on-demand. Plan your schedule, sign up for sessions, and explore current promotions and merchandise.







Easily book fitness classes, manage your membership, and stay updated on services. Make reservations, join waitlists, and purchase class packages directly from your device.