It's simply acting as a connector. And directing traffic around Nat Etc for lay people or those who don't want to bother with setting up and securing server software or such things. Unless of course I'm completing the two and they aren't related. It's possible I suppose. But I've used the app a couple of times. And I don't ever remember having to sit and wait for a file upload. It was instant. Like the file being hashed and info being generated. Then slapping you with a QR code or a string to give to the person you're sending it to Initiate the transfer