Salaam, Below are a list of android apps you may find beneficial.
PLEASE NOTE, THEY HAVE NOT ALL BEEN TESTED OR VERIFIED, THEY HAVE NOTHING TO DO WITH MUFTISAYS.COM
THERE ARE MANY APPS OUT THERE BY THE SHIA, QADYANI ETC....
If I have used an APP that I think is good, then I will give my opinion on it. InshaAllah.
Some of the apps are straight forward to install onto the phone via the App Market and some may need to be downloaded to the phone via the PC.
Allways download via WiFi to save you running up the data tariff and ALLWAYS use the Market, this way, when you change phones, the apps can be reinstalled automatically.
If you have something (Islamic) that we can benefit from, please share them here too, Jazakallah.
POST UPDATE (27-02-2012) Most apps can be viewed on a single page by visiting this new update by Masjid E Quba. http://www.masjidequba.org.uk/events/smartphone-apps/