IoT Azure Mobile Services Windows Embedded Compact 2013 is available at https://cejson.codeplex.com
It can Post and Get Telemetry data to an Azure Mobile Service (AzMS) table. The app can parse the JSON string returned from the HTTP request to the service. The app is in native code. There is also a deskstop equivalent project (same source code) as well as a Universal App that runs on the desktop Surface RT and Win Phone; all utilize the same AzMS table.
PATCH (PUT) and DELETE now available on CEJSON. See next blog in this series.