Smile [Q] App to send SMS using VOIP on stock msg app

Hello,

Does anyone know any app that would intercept outgoing SMS on stock messaging app and make a request to a certain URL instead of sending it using the phone company?

The point is, I'm using Rebvoice to send SMS for 0.01, which is way cheaper than sending using my phone company. This service provides a way to sending SMS making a request to an URL, so a simple app like the one I described would allow me to send SMS using Rebvoice with the stock messaging app.

Thanks in advance.