Deleting an app from a phone removes software from that device. It does not necessarily remove the relationship you previously authorised between the service and an online account. A useful clean-up therefore includes the account’s connection settings.
Start by identifying how you used the app. Did you sign in through another account, grant access to a calendar, or connect two services? Those are different relationships, even when they involve the same app name.
Review the connection at its source
Google’s guide to managing linked apps distinguishes sign-in links from access to account data. Its guidance also explains that removing a sign-in link does not delete information held by the other app. Read the type and scope of the connection before deciding what to remove.
Open the account settings through a trusted route rather than a link in an unexpected message. Review the app’s identity, the permissions shown and whether you still use the connected feature. If you have several accounts, check the one that actually granted access.
Before removing a sign-in method from a service you intend to keep, confirm that you have another supported way to access that service. Otherwise, a tidy-up can become an avoidable account-recovery problem.
Treat stored data as a separate task
Revoking ongoing access and requesting deletion of previously collected information are not the same action. Consult the service’s privacy and account-deletion controls if you want to close the account or remove data. Keep any confirmation you receive.
A small record can help: service name, connection removed, account checked and date. Do not place passwords or recovery codes in that record. If you discover access you do not recognise, use the account provider’s security review rather than assuming an uninstall has resolved it.
Repeat this review when retiring a device or abandoning a service. The useful question is not only whether the app remains on the home screen, but whether the permissions behind it still serve a purpose.