For HYROX-affiliated gyms

Run your sessions.
Not your software.

Everything you need to run coach-led group training — a back-to-back schedule, fixed-capacity sessions, packs, memberships, payments and check-in — in one fast, modern place your coaches will actually enjoy using. Built for race-prep gyms, and just as good for any functional or small-group training floor.

Genuinely easy to use Waitlists that fill themselves Hands-on onboarding
strong-os.com

Revenue · this week

£2,480

▲ 12%

Occupancy

86%

Today’s sessions

06:00Race Sim 60Waitlist
07:15Compromised Running9/12
12:15Sled & Sandbag8/14
18:00Strength Circuit15/16
Fast, modern software your whole team will love

Why race-prep gyms switch

Every slot on time, every rig full

Fast enough for a 6am rush

Fast, uncluttered and genuinely a pleasure to use. Your coach checks the session in, sees who’s on the floor and gets back to coaching — not clicking through five screens between slots.

Fixed capacity, honoured

Eight sleds means eight places. Set a cap per session, a cancellation window that suits you, and a waitlist that auto-fills the second someone drops — so peak slots don’t run light and nobody queues for a rig.

Packs, unlimited, or a bit of both

Session packs, unlimited memberships, intro offers and drop-ins side by side. Credits are tracked per session type, so a race-prep block covers race prep and open gym stays open gym.

Everything to run sessions

One place for the whole gym

A back-to-back schedule

Slots every 30 or 45 minutes, each with its own coach and capacity. Members book, cancel and join waitlists in seconds, on the web or in the app.

Session packs & memberships

Sell packs, unlimited memberships, intro offers or single sessions. Credits are tracked per session type automatically, so a race-prep block covers race prep.

Payments, handled

Take card and Apple Pay online, or take a walk-in’s payment at the desk with a QR code. Recurring memberships run themselves — no invoices to chase.

Fewer no-shows, fuller sessions

Automatic session reminders, cancellation windows and waitlists that auto-fill freed places, plus one-tap check-in so you always know who’s on the floor.

A booking experience members love

Members book in seconds on the web or in the app — clean, quick and effortless, so they keep coming back.

Know your numbers

Revenue, occupancy slot by slot, new members and retention at a glance — so you can see which times are working and grow with confidence.

How we compare

The modern alternative to Mindbody & Glofox

Strong OSMindbodyGlofox
Modern, fast interfaceYesDatedOK
Built for an independent gymYesFitness, wellness & beautyFranchise & multi-site
Genuinely easy to useYesSteepOK
Everything in one placeYesAdd-ons to stitchTiered
Session packs & credit typesYesGeneric passesGeneric
See the full Mindbody, Glofox & bsport comparison →

Questions

The things race-prep gyms ask us

We’re a HYROX-affiliated gym — does this fit?+

Yes. We’re not affiliated with HYROX ourselves — we just build the software plenty of their gyms need. If you run coach-led sessions on a schedule with a fixed number of places, that’s exactly what this is for: race-sim slots, compromised-running blocks, conditioning and strength all sit on one timetable, with open gym alongside.

Can we run open gym alongside booked sessions?+

Yes. Open gym is just another session type with its own capacity and pass — so an unlimited member can drop in, a pack holder spends a credit, and you still know who was on the floor.

Does it work if we’re not a race-prep gym?+

If you run coach-led sessions on a schedule with a fixed number of places, yes — functional, HIIT, circuits, small-group strength and bootcamps all fit naturally. A gym floor or a coach’s own diary of 1-to-1s works alongside them.

How hard is it to switch?+

Not hard at all. We move your members, memberships, packs and schedule across and set you up personally, so you’re never starting from a blank page.

Will my coaches find it easy to use?+

That’s the whole point. It’s fast and uncluttered, so your coaches and front desk are up to speed in minutes — not weeks of training.

Can we cap each session and run a waitlist?+

Yes. Every session has its own capacity and waitlist, and the waitlist auto-fills the moment someone cancels — with the next member told they’re in.

Can members buy a pack instead of a membership?+

Yes — packs, unlimited memberships, intro offers and single sessions all live side by side, and credits are tracked per session type.

Can we take a walk-in at the desk?+

Yes. A walk-in scans a QR code and pays on their own phone, then goes straight into the session — no card machine, no cash tin.

Is my gym’s data private?+

Completely. Every gym is fully isolated — you only ever see your own members, sessions and bookings.

Ready to make the switch?

See Strong OS on your own gym’s schedule. Book a quick demo and we’ll show you around.