[_vvdf]

GTalkSMS is far better; it lets you set this up with a trusted XMPP service and has far more functionality. It also is free (no in-app purchase bait-and-switch nonsense):

https://play.google.com/store/apps/details?id=com.googlecode...

Edit: It also looks like the account that posted this has done nothing on HN but post links for his company.