The information given down below may be irrelevant or outdated. We will be updating the page soon. Sorry for the inconvenience and thank you for your patience!
Stack is a freemium product. Basic features are for free, but for getting additional PRO features you need to subscribe to Stack PRO.
Stack PRO grants access to features, such as:
Multiple Workspaces
Auto-Refresher
Themes
Support to extensions
Ad Shield
To learn more on each feature and what you can do in Stack, check out this article: