I used Niagra for the longest. But there's no way to pay for pro outside GPS. Like a lot of apps I've paid for over a decade ago I can no longer use (shakes fist at SleepAsAndroid). That said, I'm trying a new one called Minimal SL from F Droid. I was immediately drawn to it because of the Minimal Phone 2 launcher, which I hope becomes available or ported soon. I may buy one soon as a primary phone and keep my now primary phone for bigger screen tasks/media.
So far I like the shortcut for apps. Start typing the app name and it immediately opens. A simple task list at the bottom.