Hello and welcome to the forum..
Yes, you will need to buy a separate licence. They are different products.
Also:
FAQ ID: 1185 wrote:Will my app purchase and/or in-app purchases transfer between iOS, Android, and Mac/Windows versions?
It is not possible to transfer an app purchase or any in-app purchases between various versions of our apps on different platforms such as iOS (iPhone/iPad), Android (phones/tablets), or Mac/Windows computers.
For example, a purchase of the AmpliTube app for iPhone will not open access to the AmpliTube app in the Google Play Store or on your Mac/Windows computer.
Another example, a purchase of in-app content in the iGrand Piano app for Android will not transfer over to iGrand Piano for iPhone/iPad.
https://www.ikmultimedia.com/faq/index.php?category=11&topic=amplitube-4PS: it would be best to change your Account Name away from an email address, to minimise the chance of it being harvested by web bots and you receiving all sorts of 'special offers' etc from all over the place for years and years. You can change it here:
https://www.ikmultimedia.com/userarea/account/