App alternative to LED notification light in FP4

Hi. Just upgraded to an FP4. All good except there’s no LED notification light.
I see there’s an app Aodnotify which is a workaround but I think you have to buy the Pro (£2.50j to make the light repeat (otherwise, it’s just once).
Has anyone tried this? Or any other suggestions?

I updated the title of your post to better reflect your actual question. Feel free to improve it further.
Are you aware of the whole notification LED discussion that already took place here?
There might be some suggestions in there already.

Please follow-up in the linked topic.