Hello. We also looked at the Sync Framework and concluded that on it's own it was a nightmare to use. So in answer to the problem we created a new solution called dbAppSync (
www.dbappsync.com). dbAppSync delivers database synchronization functionality for SQLite to MS SQL Server without having to learn anything about the Sync Framework or having to write any code.
dbAppSync is a complete solution and is designed to handle the unique issues common to mobile devices such as memory limitations. We have a B4A library and the functionality can be easily added to any app.
Please contact me if you need more information.