Trenoxa ‑ Class Booking

Never sell the same seat twice. Trenoxa lets you sell class, workshop, and event seats through your normal Shopify checkout, with per-session capacity that can't be oversold even when two customers race for the last seat. Create a class once, add recurring or one-off sessions, and customers book at checkout with live seats-left shown. Refunds and cancellations release the seat automatically, and every session keeps a roster. Short on time? Email us and we'll set your classes up for you, free.