To all those suffering from Core Data + iCloud syncing: we built Simperium (YC S10) to solve this problem. The iOS/OSX and JavaScript libraries are open source,

To all those suffering from Core Data + iCloud syncing: we built Simperium (YC S10) to solve this problem. The iOS/OSX and JavaScript libraries are open source, with the backend to follow (or you can use the hosted service). The site is at http://simperium.com http://simperium.com and the repos are at http://github.com/Simperium http://github.com/Simperium We were recently acquired by Automattic, and we're now putting more resources into the project (for example to make it work on Android as well). If cost for the hosted service is a concern for you, you can get in touch and we'll work something out (info@simperium.com).