Can an utility depart some recordsdata behind after it’s uninstalled on iOS, and might it decelerate or hurt the OS in different methods after it’s uninstalled?


Whereas your entire app container is deleted on uninstall, together with the app’s read-only recordsdata representing itself and its read-write recordsdata for consumer paperwork and settings, there are different issues that may persist:


When uninstalling an app that makes use of iCloud paperwork, the affirmation immediate warns that iCloud paperwork will likely be saved. These could be eliminated individually by deleting the app’s folder from iCloud within the Information app.


Any entries added to the keychain by the app are continued.

The keychain shouldn’t be restricted to passwords, […]. You may retailer different secrets and techniques that the consumer explicitly cares about, akin to bank card info and even brief notes. You may as well retailer objects that the consumer wants however is probably not conscious of.

The one approach to take away these is to manufacturing unit reset iOS and never restore from backup.

App Group container

An app can register itself as a part of an app group and share a container with different apps within the group (by the identical developer). If in case you have one other app put in from the identical group, the app group’s container is saved. This will likely be eliminated as soon as the final app from the app group is uninstalled.

DeviceCheck bits

An app can set

two per-device binary digits

that are saved persistently.