SimpleSSHD running my on Android allows me to use rsync to move files back and forth on my phone. With scripting the entire process is automatic. I run a scheduler on the phone that turns SimpleSSHD on at a specified time. A crontab controls the backup and push of the files to the phone. I set it up once, tweaked it, and never have to think about it again.
Here is a tutorial I put together to make all of this happen: