Subnet Calc Pro was released onto the App Store last night and I have set the initial price at £2.39 / $3.99. This is the first version and I expect to see how it goes and then I will look at releasing new features over coming versions. Version 1.0 includes very useful features over Subnet Calc such as being able to define hosts inside a subnet which can help to keep track of IP allocations.

I will be releasing a little guide onto this website soon which will show some screenshots to explain some of the features of Subnet Calc Pro