I have used a variety of wifi texting services like Heywire, Textfree, etc. The problem is that I am assigned a new number. I don't have data, so even though I might explain to people to text me on my mobile carrier's number (I get free incoming) so that I can receive it wherever I am, they always end up getting confused and texting my wifi texting number and then wonder why I don't receive it right away (because I might not be connected to wifi when they send it). I need an app that can text over wifi (so I can avoid charges) but uses MY phone number. Even if it doesn't actually use my phone number, I don't care. But as long as it forces the person getting the message to reply back to my mobile carrier number. I tried mysms, as well as ChompSms, etc; but they all charge to send over wifi to users that don't have the app. And What'sApp and others like it forces the end user to also have the app. The fact that there are apps like mysms and ChompSms that send sms messages over wifi with your own phone number to anyone that can receive sms shows that it's possible. Does anyone know of a COMPELTELY FREE one?