I was pretty worried about the whole journey as I had almost zero experience regarding travelling by trains and so it happens that the user interface of the app is so smooth and safe that I booked tickets for continiously three times.
Regarding security about booking, it is very secured in the sense that it provides a very real time views of the journeys and makes ticket booking very easy though it charges a few extra bucks for convenience.
Regarding its utility it provide four options which helps for all the pre-prepared travellers to plan their journey properly.