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Account links and shared access

What linked apps and account sign-ins can share

Apple and Google distinguish sign-in identity, authorized account data, email forwarding and automatic sign-in. Learn which connection controls which information.

Sources checked .

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Sign-in can share identity information

Google says Sign in with Google can authenticate a person and create an app account using a name, email address and profile picture. Its automatic sign-in feature depends on an existing Google sign-in and earlier consent to share the profile with that app. Read the selected account and the requested information. Google: sign-in profile sharing and prompts

Account-data access is a separate permission

Google's data-access help describes basic profile access, permission to view or copy data, and permission to manage specified data. Depending on the authorization, management can include creating, editing or deleting data. Permission for one product, such as Calendar, does not itself authorize access to every other Google product. Google: authorized data access and earlier copies

The direction of a link matters

Google's management guide distinguishes Sign in with Google, an app accessing Google Account data, and Google accessing a linked app account. One app can have more than one link type. Removing one should be understood in terms of that connection's direction and purpose. Google: distinct linked-app types and removal effects

An email relay changes what address an app receives

Apple says a first Sign in with Apple can request a name and email address. Its Hide My Email option supplies a random address that forwards to the personal inbox. That describes the sign-in and email route; review the app's own records and activity separately. Apple: first sign-in and private email relay

One developer can connect more than one app

Apple's management guide says a developer may use one Sign in with Apple account for multiple apps. In that case, stopping the sign-in connection or forwarding for one app applies to all apps from that developer. The developer grouping is part of the control's scope. Apple: app review, developer scope and forwarding

Apple Automatic Sign-in has another connected-account list

Apple separately documents Automatic Sign-in for supported apps on iOS 26, iPadOS 26 and tvOS 26 or later. Its connected-account view can show the last device used. Disconnecting this feature does not automatically sign out the app on existing devices. It has different effects from stopping Sign in with Apple. Apple: separate Automatic Sign-in connected accounts

Questions and answers

Does one Google link describe every permission for that app?

The management guide says an app can have multiple link types. Google: distinct linked-app types and removal effects

Does basic Google sign-in automatically grant all Drive or Calendar access?

The data-access guide describes separately authorized product and access levels. Google: authorized data access and earlier copies

Does disconnecting Apple Automatic Sign-in end existing app sessions?

Apple says it does not automatically sign the app out on the devices. Apple: separate Automatic Sign-in connected accounts

Sources and scope

Public Apple and Google instructions checked 10-24-2026. The examples describe distinct connection types. Available controls depend on the provider, product, account role, app support and system version.

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