Your fields, gyms and rinks, each split into the spaces you actually book, with their open hours, closures and rates.

Every practice, game and rental on a space is checked against what's already there. The clash shows up while you're booking, not when two teams arrive.

Put your spaces on your website. Renters pick a time that's open, see the price, and pay. You approve the ones you want to look at first, and a weekly rental books every date at once.
No demo or credit card required.