It depends where you subscribed. If you subscribed here on the website, go to
your account or
vroomi.co.uk/cancel-subscription and sign in — you can cancel there yourself. If you subscribed inside the iPhone app, Apple holds the subscription and only Apple can cancel it: open Settings on your iPhone, tap your name, then Subscriptions, and cancel Vroomi there. We cannot cancel an App Store subscription for you, and cancelling on this website will not stop one. Either way, if you cancel during your free trial you won't be charged, and if you cancel while subscribed you keep access until the end of the period you have paid for.