In reply to Nick.

Hello Nick,

Server Resources - The impact that Sprout Invoices has on your site is rather minimal, since it doesn't interfere with any front-end views/traffic. The only front-end views that would be impacted is when/if an estimate or invoice is viewed. I could provide more technical details of why SI will have minimal impact on your site, e.g. object caching, etc..

That said, if you're worried about resources than it might be time to find a host that helps you enough that you don't need to worry about this at all.

Security - I don't understand this concern at all. Sprout Invoices conforms to all WP coding practices and has had security auditing (and will continue to). If you have any specific concerns let me know, I want to make it clear that SI is as secure as your WordPress install. Hopefully it's not running only locally :)

Let me know here (or contact me directly) and I'll answer any questions or concerns you might have.