Buy — Movies App

: Highly convenient if you already have an Amazon account. It has one of the largest catalogs for both obscure and mainstream titles available for purchase. Amazon Prime Video Store

If you plan on buying movies across different apps, you use Movies Anywhere . buy movies app

: A favorite for serious collectors because of its "Disc to Digital" program, which allows you to scan physical DVD/Blu-ray barcodes to get a digital copy for a small fee. Fandango at Home : Highly convenient if you already have an Amazon account