Justin.tv was among the many companies to launch Android apps this week, with feature inclusions that help the app stand out from the crowd. The UK’s Royal Mail also made interesting use of the Android app Junaio, adding a digital accompaniment for its new intelligent stamps.

Here are the top Android apps of the week.

Entertainment and media

Philips GoGear Connect has confirmed rumors of an Android-powered mp3 player that can run on iPods. The announcement, made at the IFA conference in Europe, brings more promise for the Android platform. Free, GoGear Connect is even coming installed on some upcoming Android devices.

Sony has updated its entire line of eReaders, which means an Android update is around the corner. The new versions have more storage space, an improved UI based on screen size, and supports more file types, including ePub, PDF, Word and plain text. As eReaders grow in popularity for Android devices, Sony will be further encouraged to update its mobile offerings.

Homes.com is going mobile, with a new Android app for searching local real estate markets. Bookmark your favorites, share them with friends, and get detailed driving directions to homes of interest. Free, the app lets you search properties by MLS numbers, and includes direct-contact information for representative agents.

MIT has launched an interesting mobile app, turning your Android device into a supercomputer (in theory, anyway). rbAPPmit is a free app that lets you compute problems on site, considering factors such as structural cracks and other variables that require a powerful formulaic calculator.