You can also try Feem (https://feem.io https://feem.io). It transfers folders without Internet, and has an Android app like you requested. It also supports re

You can also try Feem (https://feem.io https://feem.io). It transfers folders without Internet, and has an Android app like you requested. It also supports resumable file/folder transfers, which majority of other tools mentioned in this thread don't support. Disclaimer: I'm the creator.