What it does
Sprucer clears system junk, app leftovers, large and old files and browser traces, and checks for adware, background helpers, app updates and extensions. It also has a menu bar monitor, a widget, iCloud space, battery health and app permission screens. It shows you what will go before anything is removed, and moves things to the Bin by default so you can undo. It's written for people who aren't technical, in plain English, with no scare tactics.
What's next
next Decide pricing and licensing, then sell it directly rather than through the Mac App Store.