The device is recommended if you do not own high-quality digital camera, and is reluctant to carry two devices. However, it must be remembered here that, although the QX100 comes up with great hardware and can shoot beautiful pictures that PlayMemories app limited the potential of the camera incredibly. And this app is unfortunately compulsory and can not be avoided if you want to use the camera on your smartphone. The setting options on offer from the app are as "lean" and at worst, to be described as "castration" at best.
The app is very beginner-friendly, but that's just because that one has been playing around after 10 minutes with all the options enough to understand them.
Conclusion: Sony has here outdone themselves in terms of innovation and ingenuity, and again in terms of the hardware produces a high quality product, which allows you to shoot beautiful photos. Unfortunately, the same can not be said of the software department, because this seemed to be approached underpaid and without motivation to the task.