I've been having quite a few issues with 2talk's iOS app. It doesnt seem to register my details when capturing it and seems buggy. Releases are too slow to fix these issues.
I'm looking for a reliable alternative to use on iOS (I dont mind paying for the app if it's good) that others have successfully used.
Assuming I just capture my 2talk credentials, but if you have any other settings I need to configure to get the best call quality on the chosen app, then please let me know.

