The settings are diverse and at the beginning I had my problems with it. You can synchronize the entire Dropbox folder as well just in sowol. Also you can set the direction and what data have priority. That I for example from your smartphone only download but let nothing about writing. But can be synchronized in both directions.
I also like the way the data transfer to let only carry over WLAN, because that protects the data budget.
I had tested the app first and then me because of the power to decide which programmers support by purchasing the pro license.