When you try to sign in to Goodnotes using your child’s Apple ID, you may see a block from Apple and be unsure how to continue. In this case, we recommend using an alternative sign‑in method: Sign in with Google or Sign in with Microsoft instead.
Why this happens (cause)
If your child is under 13 years old (the exact age limit varies by region), their Apple ID cannot be used with Sign in with Apple. This is an Apple limitation that applies to all third‑party apps, including Goodnotes, that use “Sign in with Apple".
If your child is part of your Apple family group, they can still:
- Sign in to the device with their Apple ID
- Enjoy shared purchases
However, they still cannot use Sign in with Apple inside Goodnotes and therefore cannot access the shared Goodnotes 6 subscription or one‑time purchase through this sign‑in method. They will need to use the workaround below.
Workaround: use Google or Microsoft
Both Google and Microsoft support child accounts for signing in to third‑party apps like Goodnotes.
Using a Microsoft child account
Parents must enable the “allow sign in to third‑party app” option on the child’s Microsoft account. You can do this in your Microsoft family settings (see Microsoft’s guidance and community article for details).
More Reference: Microsoft community
Using a Google child account
Google provides a more user‑friendly flow with a permission prompt when a child signs in to an app. Parents can approve the sign‑in directly as part of this process.
Google provides a more user-friendly experience with a prompt for permission when signing in to an app, allowing parents to approve the sign-in.
More reference: https://www.androidpolice.com/2021/06/10/google-accounts-for-kids-can-now-finally-sign-into-third-party-apps/