to my knowledge there r at least 3 types of apks for androids:

1. proprietory - will only work on that brand/model; include legit movie/tv packages that manufacturer paid license.

2. apps found in playstore - some payable, some free; common utility apps found here.

3. other apps not found in playstore, get from website or other users - this is where some the best apps are!
whether an app that works on one device can work on another may depend on the specs and memory of the device - there is no guarantee.

check yr device for available internal memory.

popcorn is torrent based, need sufficient internal memory to work well.
if available is small, say 2gb, only small files will work.
if way too small, nothing will work.
if there is >6gb, everything will work.