[sacheendra]

This functionality is supported by the software supplied with the broadcom driver for any bluetooth enabled phone (on Windows). No need for an app on the phone. Such functionality is also on linux in the bluez package. Don't know about Macs. It is really sad that previously ubiquitous software is now being made into "apps".

[Xylakant]

A lot of ubiquitous software requires fiddling to get it installed since somebody made a proof of concept but stopped there. The value of prepackaged apps is the polish and the user support around that - that's worth a couple of bucks for people like me that don't want to spend time for the polish.