I feel less guilty about buying something simple like this (when I could make it myself) when there's a reasonable one-time payment. I bought the optional featu

I feel less guilty about buying something simple like this (when I could make it myself) when there's a reasonable one-time payment. I bought the optional features at http://invoiceable.co/ http://invoiceable.co/ for about $150 for PayPal invoicing. Note that I'm not totally happy with them though because they have mixed content on their SSL invoice page for clients and use non-SSL links in default emails. Also for the price of Quaderno you could just buy http://xero.com http://xero.com and get a lot more features. They too do Stripe invoicing.