How-toMembers
How to book a session
Pick an open time on the Book page or Book tab and confirm it. Each spot uses 1 session credit, taken when you book.
2 min readUpdated November 3, 2026
You book by choosing an open time and confirming it. Each spot uses 1 session credit, which comes off your balance the moment you confirm. If you need to cancel later, cancelling before your gym's cancellation window (24 hours unless your gym has changed it) returns the credit.
Warning: Booking a session that starts inside the cancellation window can result in losing the credit if you then cancel. Always check the cancellation note on the confirm screen before you book.
Before you begin#
- Have at least 1 session credit. Your balance shows at the top of the portal and on the app's Home tab.
- Sign your gym's waiver if it asks for one. See How to sign your gym's waiver.
- Know whether you want a particular trainer.
On the web#
- Select Book in the portal menu, or Book a session on the overview.
- Choose List to see times week by week (This Week, Next Week, In 2 Weeks, In 3 Weeks), or Calendar to see a month at a time.
- Select a trainer under Trainer if your gym shows trainers.
- Select Book · 1 credit on the time you want.
- Check the details on Confirm your session.
- Choose Just me or a number of guests, if the slot has room.
- Select Confirm Booking.
You'll see You're booked and the session appears on your overview.
In the Levflex app#
- Tap the Book tab.
- Choose a day under Days. Days with open sessions are marked.
- Tap a time under Open sessions.
- Check Uses 1 credit and the cancellation note on Confirm booking.
- Add guests with Guests if you're bringing someone.
- Tap Book session.
- Tap View my sessions to see it on the Sessions tab.
Common mistakes#
Booking without a credit#
You need a credit before you can confirm. If you see You don't have a session credit yet, select Buy sessions, buy a pack or single session, then come back to the same time.
Missing the cancellation note#
The confirm screen shows when free cancellation ends, for example Free cancellation until a time. For a session starting soon, it warns that the credit isn't returned if you cancel. Read it before you tap Book session.
Booking two sessions at the same time#
You can't hold two sessions that overlap. A time you can't take shows Booked then. Cancel the other booking first if you want to switch.
Assuming a busy calendar blocks booking#
If you connected a calendar, a time that clashes shows Clashes with and the event. It's a warning only. You can still book it.
Troubleshooting#
- Is the Book button missing or showing Full?
- YesThe slot has no spots left. Pick another time, or see I can't book a session.
- NoGo to the next question.
- Yes
- Did you get an error after confirming?
- YesMatch the message in I can't book a session.
- NoYour booking is confirmed. You'll get a confirmation by email and, if they're on, by push notification.
- Yes
Your booking shows straight away on the portal overview and the app's Sessions tab.
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Related articles
- ExplainerHow session credits workA session credit books one spot. Credits come from packs, memberships, referrals and returned cancellations, and Levflex doesn't expire them.Read
- How-toHow to cancel a bookingCancel from the portal overview or the app's Sessions tab. Cancelling before your gym's window (24 hours by default) returns the credit; later cancellations don't.Read
- How-toHow to choose a trainer when you bookFilter open times by trainer when you book, and set a preferred trainer so booking always starts with their sessions.Read
- TroubleshootingI can't book a sessionMatch the message you see when booking fails to its fix, whether it's credits, a waiver, a full slot, a time clash or payments that aren't switched on.Read
- How-toHow to bring a guest to a sessionAdd guests on the confirm screen when a slot has room. Each guest uses 1 more of your session credits, and most gyms allow up to 3 guests per booking.Read
Still need help?
Ask the assistant, or get in touch with your gym
The assistant answers questions about booking, credits and the app any time. Prices, refunds and cancellation rules belong to your gym, so message them from the portal.