We have a running app based on b4a and backend on mysql with jRDC 2 connection. This mostly work with areas with good internet connection. However, we have a need to move this database to local database on mobile device. We would like to outsource this to you. The modified app will have an option to download and move database to local. It will need to have synchronization capability on upload/download data. Also error handling and resume function when connection is interrupted. Please contact me with your offer if you are interested.