Yes, users are able to cancel their App.net subscription. To do so, one must typically navigate to their account settings on the App.net platform. There should be an option related to subscriptions or billing where users can manage their subscription details. It is important to review any cancellation policies that may apply, as terms can vary. Users may also want to ensure they are aware of any final charges, and whether they will retain access to features until the end of the billing cycle. For the most specific and detailed instructions, it would be advisable to visit App.net's current website, where contact information and support resources are available for further assistance.