Obviously if you are unwilling to learn a new language then yes flutter is not going to do it for you. Flutter is Dart's gui framework and it's excellent. Dart however is itself a lovely language and extremely easy to pick up if you have any knowledge in programming. Much easier than learning the flutter framework to be honest.

> That's the thing - not really.

If you were to spend some time learning dart and flutter you'd know this to be false. But I'm not here to change you mind as you've already made it.