Some additional background on Warpinator, and the unofficial Android port (apparently the Mint lead Clément Lefebvre approves):
https://blog.linuxmint.com/?p=3863
https://www.linuxmint.com/rel_uma_cinnamon_whatsnew.php
https://blog.linuxmint.com/?p=4054
Android port: https://github.com/slowscript/warpinator-android/blob/master/connection-issues.md
For me personally, the main attraction is Android support. Otherwise I would use sftp.