I'm in the US. I want to txt with my friend in Sweden without the intl texting fees. He's on an iPhone using iMessage. Is there a WP chat app that interfaces with iMessage?
Work good for the most part, push notification come through for the most part. Isn't as customizable as it is on other like platforms like IOS and Android. What cool about it is you can send text or 1 minute audio messages, and you can also see when the person has seen your message and when there typing a response.
Another app to consider is called "TextMe" by TextMe, Inc ..after you download the app and sign up (free) your are given a phone number which you can send and receive text from, the only downside is when it comes to sending a picture, its very buggy and doesn't work half the time, but for texting its fine.