The f-droid version should be ok for now, but if you installed this from the malware distribution channel aka the Playstore I would recommend to deinstall them before the next update hits.
I understand the developer, but the complete lack of communication with the community is appalling. and even the subsequent app updates to ad-supported/tracker-packed versions is just disgusting. i understand why tibbi burned out, but the sale process was handled in extremely poor way