It should be but said that APP REMOTE Although already offers some good functions for control via voice or mobile phone display, but who is hoping for a full integration of all apps will still disappointed. Currently it is possible to let them read SMS, and also respond via voice, and also mail, Facebook and Twitter are to function, even if the latter has not worked for me. Other apps such as Whatsapp, threema or Trillian are not currently supported, and rather held back or blocked by APP REMOTE. Also, I currently see no possibility not only to respond to SMS or messages, but to write proactively, without resorting to Siri or Google.
Conclusion: A really good price / performance ratio for a car radio with some great gimmicks. If Sony developed the app and even integrated some important apps (which I very much hope!) Hard to beat. The fifth star's once Whatsapp works;) But otherwise: strong buy recommendation!