Absolutely! That's great to hear. You can give a gift card or voucher from the App Store (Apple or Google) with instructions to spend it on ChatLicense. Alternatively, you can download ChatLicense as an adult and then share the app with the birthday boy or girl or any other celebrant.
On the ChatLicense website, you can find a gift button through which you can purchase a ChatLicense voucher. You will receive an email with a unique code for a ChatLicense subscription that you can give digitally or in print to the lucky recipient!