I've downloaded OP's application and whilst it seems much more straight-forward, I've come across a problem with transfers between accounts that makes me feel that it isn't quite ready yet.
Looks like I might have to settle for GNUCash.
I can't believe how difficult it's been to find a solution for simple double-entry accounting that's also self-contained (ie, I can create invoices and attach receipts). Our side project doesn't make enough money to justify spending on Quickbooks or a monthly site subscription, but I'm not convinced that they would be the right answer, anyway.
Though it is an ERP, you can just use the accounting and sales modules and hide the rest.
(I am a developer at erpnext)