I have a side-project (https://batterybarpro.com) that's a native Windows application. It brings in $400-1000 a month.
Small question: how do your users find your product?
After a while, I just stopped all marketing efforts and now it's all just word of mouth/google search.
> removed the feature the allowed for toolbars
Should be that, I presume.
Best part: it also shows battery health really well with discharge charts and can track multiple batteries (if you still have a laptop with which you can swap...).