Based on an IP Address calculator concept, Subnet Calculator is a Windows Phone 7 application that will allow you to make different calculations related to your network, that is IP addresses, subnet masks with wildcard masks, etc.
Those of you who are more into networking could leave us a comment below on what they think about this application and its functionality. That aside, Subnet Calculator being just a project, according to the author, we might see gesture support added to the application which looks pretty with the Metro look.
As embedding is disabled, check the video by clicking on this link which will take you there.
(Via: XDA Developers)