Pretty much all of those apps will use cross-platform frameworks to save costs and bundle bunch of extremely bloated proprietary (paid) libraries. It's not strange to see those whole apps written in web stack and bundling whole Chromium and bunch of large native libraries claiming they "detect unsecure phones" (while mostly just crashing when they see something like Android 13 or iOS 16).

Almost all of them are outsourced as well, so you get the cheapest solution done by cheapest developers combined with box ticking compliance.