It’s Sunday, the time of the week when Cult of Android brings you its report on some of the very best apps we have been using throughout the past week.

This week we have been trying out a great photo sharing app, a reliable instant messaging app, a festive live wallpaper and a useful digital clock widget.

Google has pushed out an update for its Translate app on Google Play, bringing new gesture support, improved conversational translations, as well as handwriting support for Hebrew, Greek, Javanese and Esperanto.

Starting today, residents in the U.S. will be able to purchase Google’s first Wi-Fi streaming dongle, the Chromecast, from Motorola’s official website. The newly Google-owned company is listing the device as an officially accessory for the Moto X and Moto G, and can be had for $35.

Google has launched a great new contest, entitled #WhatMatters. The competition gives all Google+ users an opportunity to win a brand new 2013 Nexus 7 (16GB Wi-Fi model) or a $50 Google Play gift card, which will be electronically sent to the winners e-mail address.

Google unveiled the revamped model of its flagship 7-inch tablet, the Nexus 7, back in June, and a month later the device was available to purchase from the Play Store for $299. However, if your didn’t have the opportunity or the wherewithal to pick one up at the time, it might be of interest to know that you can currently grab the slate for $179.