Not specifically an S8 app but I have just installed the test app of the new Google search lite. There is a write up here and the link to download is also in the article at the bottom.
https://www.phonearena.com/news/Goo...rettier-and-probably-not-made-for-you_id97113
Its kind of cool and allows you to search one handed if needs be because the search is now at the bottom. It is in experimental phase but I haven't had any force crashes as of yet (fingers crossed) and it has an option to conserve data and therefore takes less time to load.
Its just a small change but I kind of like it! Anyone else tried?
PS when it asked language I went with the top option, Indonesian something or other but its English
Allegedly it wont be officially available outside of Indonesia but the beauty of Android means we can do whatever the hell we want!! 
https://www.phonearena.com/news/Goo...rettier-and-probably-not-made-for-you_id97113
Its kind of cool and allows you to search one handed if needs be because the search is now at the bottom. It is in experimental phase but I haven't had any force crashes as of yet (fingers crossed) and it has an option to conserve data and therefore takes less time to load.
Its just a small change but I kind of like it! Anyone else tried?
PS when it asked language I went with the top option, Indonesian something or other but its English