Is this a subscription or a one-time payment? John May 08, 2019 14:46 It’s a one-time payment. Once you buy HIIT., you won’t be charged again at any point and you’ll have it for good! Related articles What payment methods do you accept? How long will I have access to HIIT for? What are the benefits of training with the HIIT Guide? What are the benefits of training with Cut.? What makes Cut. different to other fat loss programmes?