nice. Im trying it out. I'm not that bothered personally about integrations (a DOI is really easy to copy and paste from one tool to another). But I'll get in there first.. I switched to Paperpile a while ago (after the death of Citeulike RIP) - and it's pretty darn perfect. I'd vote a +1 to have that as a citation source..
PS is this a electron app? It has that feel..