Alternatives to BDK


I plan to convert my web app to native app and host on Google Play store and iOS App store . I researched and found out the popular choice is BDK.

I visited the BDK website and it is very expensive $215. Is it really that expensive or am I missing something as the plugin in bubble of BDK is $16. Please clarify ? and are there any alternatives available ?

I liked Codeless but they closed their doors unfortunately.