Cheaper than a cheesebuger and lasts somewhat longer too... Why not buy it?
Allows you to scan IP masks and automatically organize them into subnets. Can also port scan, find basic information on IPs, and there are four different scan settings. If you end up buying my app, shoot me an email if you want a feature added and I will see what I can do.
*Scans IP range with CIDR subnet mask
*Auto detect subnet
*Easy to use interface
*Port Scanner for common/interesting ports
*Lists IPs by subnet
*Multiple scanning options
*Will be updated with more features in the future