I enjoyed messing around with Bubble and Flutter (a bit) but not so much to invest in their paid plans. I bought Nowa a month or so ago and tried it, sadly with my investment in the WordPress ecosystem, I refunded Nowa but I have had so much regret about this ever since that I bought this again.
The good features - Mac App, Publish to App Stores, a Lifetime deal and a founder that is obviously passionate about their product.
The cons - It's just me, because so many people have said to the contrary, the UI/UX could be improved a bit to make to product tasty! I hope templates are added to and I'm looking forward to the marketplace.
Thanks Nowa - all the very very best for the future.