You can purchase Views individually from View Store on Atmoph Window 2. It's needed to register your credit card on your Atmoph Window 2 or to buy 'View Coupon' on Atmoph Store before purchasing Views.
*Views cannot be purchased while subscribed to Limitless.
The Views you've purchased are linked to your Atmoph account, and you can see these Views by going MENU > Views > the profile icon on the left top > Purchased.
We have also a subscription plan, Limitless. See more details about it from here.