Following the thread, many of the game’s players took to the app stores to report the app, and at the time of writing, Unpacking Masters (and other similar games) is no longer available on either the iOS app store or the Google Play store.
At this time, you can play Unpacking on PC, Nintendo Switch, and Xbox One. If there is ever an Unpacking app in the future, though, the developers assured they would announce it themselves first.
Source: https://www.distractify.com/p/will-there-be-an-unpacking-app