Unsmartifier is a Safari Web Extension developed by Arno Appenzeller. It is a free utility tool designed to remove annoying Smart App Banners that prompt you to download an app for the current webpage.

Once enabled, Unsmartifier runs discreetly in the background, preventing future Smart App Banners from being displayed. To use Unsmartifier, simply follow these steps: open Settings, select Safari, choose Extensions, find 'Unsmartifier', enable it, and enable it for all websites.

It's important to note that Unsmartifier only focuses on the system Smart Banners and cannot remove App Clips Banners that link to the app of a website. Additionally, if a website uses custom banners, those cannot be blocked by Unsmartifier. However, you can utilize various Content Blockers to block custom banners.

Unsmartifier is a handy Safari Web Extension that effectively eliminates the annoyance of Smart App Banners, providing a smoother browsing experience.