It works just like a spreadsheet.
100% free for now, I might add some premium features in the future if enough people like to use it. But the main stuff will stay free
I accidentally imported hundreds of bad invoices once and would have had to void them one by one if I went through Xero natively :geek: 
It can void invoices even if they are already marked as paid (it finds and deletes the payment first)
It saved me many hours then, I hope it can save other people a lot of hours in the future
Adam
