This is really a big sized application that takes 20 MB downloading of data and occupies 50 MB space on the memory.
I have installed this app to check for a confirm ticket but it is just like ither apps.
If seat is not available then it shows alternate route which are very cost consuming and not the best alternative in any way.
About pnr enquiry it uses the same algorithm that trainman.in had for making pribability for ticket to get confirmed.
And the last option it has is of spotting the train i.e. checking the running status of the train.