On the main menu select Settings, screen will appear as below
When you click on Sync Data you will get 3 options (Incremental Sync, Full Sync or Cancel)
Incremental sync
Upload data
This syncs data from Mobile App to Readysell
Upload & Download Data
This syncs data from Readysell to Mobile App
Full Sync
Deletes data on Mobile App and downloads data from Readysell Server onto the Mobile App