Yes, the Noggin app is available on Amazon FreeTime Unlimited! Here's how to set it up:

1. Subscribe to the Noggin service through your adult profile on Amazon.
2. While on your Amazon adult profile, create a Noggin account in the Noggin app. Tap the Register button in the Grownups section to begin.
3. After you've created an account, you'll have to add the app to your child's profile through FreeTime Unlimited.

To add Noggin to your child's profile through FreeTime Unlimited, follow these steps:
- From the Parent Settings page of Kindle FreeTime, tap Manage Content & Subscription.
- Enter your Parental Controls password, and then tap OK.
- Tap Add Titles to [your child]'s Library.
- Tap the checkbox next to each title you want to add to your child's profile. To remove the title, uncheck the boxes next to the title.

To access your newly created Noggin account, you'll have to visit your child's profile in Amazon, go to the Noggin app and sign in.
Once you've signed in, your child will be able to access Noggin on FreeTime Unlimited.

*NOTE: To use your Noggin Prime Channel subscription through the Noggin app, please create or sign into your Noggin account then select Verify Subscription option shown either under the Start For Free button on the subscribe screen or under Subscription on the Account screen in Grownups > Amazon Channel. You will be sent to the Amazon website to sign into your Amazon account so you can access the Noggin app.