@zahox It doesn't matter. You can just say no, but there's no negative consequence beyond insignificant wasted space if you install that useless app. It doesn't do anything on GrapheneOS. You can configure the spell checking which is related to the keyboard but configurable separately in the language settings. You may need to switch the spell checker and keyboard if it's for a non-English language it doesn't support well and you want to have spell checking and suggestions for it.