This release does not have a Play Store Description, so we grabbed one from version 1.5.A.0.15:

Xperia Transfer lets you transfer your precious data and content from your old Android device to a new Sony Xperia smartphone.
Please note: This app is used together with a PC/Mac, if you want to transfer your content directly between phones, please use Xperia Transfer Mobile instead.
Install this app if you are moving from an Android device (e.g. Samsung, HTC, Xperia) to a new Sony Xperia smartphone,
in case you need to transfer from a non-Android device to a Sony Xperia smartphone please use directly "Xperia Transfer" provided by Sony PC Companion (PC) and Sony Bridge for Mac (Mac). For more information, please visit http://www.sonymobile.com.
Supported devices to transfer from:
Android based devices with Android OS version 2.1 and newer.
Supported data which can be transferred to Sony Xperia:
Contact, Calendar, Messages (both SMS and MMS), Photo, Music, Video
Please note, that data (e.g. contacts) that is synced with online services will not be transferred.