I’ve been using it for a while now and it has gradually substituted most of the phone functionalities of my iPhone, which makes it even more appealing for iPod users.
The core functionalities I liked:
– You sign up with your number. It is great as it is not yet another social network.
– It mixes perfectly with your Contacts and identifies those using the app
– It allows to chat seamlessly and it had very few downtimes
– You can share pictures, video, audio notes and most of all location. The latter being a great treat when you need to reach someone.
Download it now and enjoy, definitely worth the money.