Support
NoSheet and Bard are both made by one person in Munich. If something is broken or confusing in either app, email me and you will get a reply from me rather than from a queue.
Email: nick@nosheet.app
Please say which app you are writing about, and include your device model and iOS version. If you can say what you were doing when it went wrong, that usually saves a round trip.
Subscriptions, cancelling, and refunds
Subscriptions for both apps are billed by Apple, not by me. To change or cancel one, open iOS Settings, tap your name, then Subscriptions. Cancelling stops the renewal and leaves you subscribed until the end of the period you have paid for.
Apple handles all refunds. Request one at reportaproblem.apple.com. I have no ability to issue a refund myself.
Your subscription is tied to your Apple Account, so it survives a reinstall.
Bard
Bard keeps your songs only on your device, shares a subscription with NoSheet, and has a few things worth knowing before you need them. They are all on the Bard support page.