"The app, conceived by NITI Aayog, has been developed in two weeks by the National Informatics Centre in collaboration with the developers of makemytrip.com and 1mg.com." [1]
I am sure an app developed in 2 weeks will be very secure. Incidentally, I've worked with a bunch of ex-MMT developers for quite sometime, I wouldn't consider most of them very competent.
