More likely - app is relatively secure but it collects and stores all that private info, then they need to work in some dictatorship or paranoid country (essent

More likely - app is relatively secure but it collects and stores all that private info, then they need to work in some dictatorship or paranoid country (essentially a majority of all countries) and then those governments require storing info on their own local servers with which they can either comply or be banned, and then either government misuses this info or it gets hacked and malicious 3rd party misuses this info.