If money was not an issue, I'd probably try Delphi for both A and B, which can create native cross platform apps. If not, I'd try Lazarus for A and Kotlin comp

If money was not an issue, I'd probably try Delphi for both A and B, which can create native cross platform apps. If not, I'd try Lazarus for A and Kotlin compose for B A: Lazarus or Delphi (if money was not an issue) B: Kotlin compose or Delphi (