Unfortunately, there is no AHA app available for Samsung Smart TV currently, but you can watch the AHA content on your Samsung TV.
⇒ Go to https://www.aha.video/ using the browser.
⇒ Click on the sign-in option at the top-right corner. (click on the Subscribe Now, if you are a new user.)
⇒ Log in with your AHA account details.
⇒ Now you can enjoy AHA on Samsung smart TV.