TextOne

TextOne is a beautiful and simple text messaging application that
allows you to exchange messages and more with friends on Android and
iPhone.

TextOne goes beyond SMS/texting, instant messaging (IM), BBM and
mail in many ways: it brings user really addictive chat experience.

TextOne is better that SMS/texting:
-> because you can send and receive messages freely at no cost, to any country
-> because you can groupchat
-> because there is no limit in number of characters

TextOne is better than instant messaging (IM):
-> because you have more reliability and optimisations
-> because you don't need useless online/offline statuses, just send
and receive messages
-> because it is way more simple

TextOne is better than BBM:
-> because you can use TextOne on Android and iPhone
-> because is relies on open internet standards

TextOne is better than email:
-> because you can simply read and write small and quick messages,
without signatures and quotes
-> because you can have real and quick conversations

TextOne is SMS 2.0 ("SMS done right") or IM 2.0 (next generation
instant messaging).

The TextOne Protocol (TOP) is based on XMPP/Jabber, with mobile
optimisations and reliability features.

TextOne for Android is still in beta stage:
* it is able to display photos and pictures sent from iPhone but not
send pictures/photos
* it can only reply to emails
Soon photos/pictures and full email experience will be available on Android too.