My goal was to build a classic, single-purchase utility that does one thing well and doesn't require an account or a subscription.
I do think that small, single-purpose apps are probably the easiest lunch to eat. Narrowly scoped greenfield projects are where the LLMs seem to excel right now so that game seems like a race to the bottom.
As far as the cloning goes: your only recourse is probably the DMCA angle for the exact duplicate text. It's a shame they're so lazy as to straight copy it, but I suspect the response (if any) will be them lightly laundering it through ChatGPT so it's no longer the same.
Good luck! And I hope you find more useful ideas people might pay for
Thanks, this app is just one pit stop of many!