Hello Linux Geeksters. According to Alan Pope, one of the Ubuntu developers, The Calendar, Calculator and Music applications, part of the Ubuntu Touch Core Apps have received support for the Click Store, meaning that this apps can be easily kept up to date via the Click Store update manager, without needing a second developer to authorize the process.
Also, the code has been ported to the Ubuntu SDK 1.0, the Music app has received a new design for the “Now Playing” screen and the Calendar app got a new interface.
This improvements will be also implemented on the desktop version of Ubuntu, due to the fact that the developers are working hard to reach full desktop-mobile convergence somewhere between the releases of Ubuntu 14.10 and Ubuntu 15.04 (between October 2014 and April 2015).
You can install and test the Ubuntu Touch Core apps or only the Calendar, Calculator and the Music applications on Ubuntu 14.04 Trusty Tahr and Ubuntu 14.10 Utopic Unicorn, via some third party repositories.
How to install Ubuntu Touch Core apps on Ubuntu 14.04 and Ubuntu 14.10:
$ sudo add-apt-repository ppa:ubuntu-sdk-team/ppa
$ sudo add-apt-repository ppa:ubuntu-touch-coreapps-drivers/daily
$ sudo apt-get update
$ sudo apt-get install ubuntu-sdk touch-coreapps
How to install Calculator, Calendar and Music apps (part of the Ubuntu Touch Core Apps) on Ubuntu 14.04 and Ubuntu 14.10:
$ sudo add-apt-repository ppa:ubuntu-sdk-team/ppa
$ sudo add-apt-repository ppa:ubuntu-touch-coreapps-drivers/daily
$ sudo apt-get update
$ sudo apt-get install ubuntu-sdk ubuntu-calculator-app calendar-app music-app