The Walmart-owned Vudu is one of several services that allow you to rent and buy movies online. Much like Google Play Movies, you can rent or buy content in either standard or high definition (albeit at around the price of a physical copy) and watch on any supported device. The company has had an Android application for some time now, but the 5.0 update brings a few much-needed improvements.
First off, you can finally save rented content on your device for offline playback. You can also now access Blu-rays and DVDs you have ripped with the company's In-Home Disc to Digital product from the Android app. Finally, Vudu-exclusive "Extras+" content can now be played.
If you already have the Android app, you can get the update from the Play Store right now. You can also grab it from APKMirror.