If you can download it client side you can likely place a copy in a folder and ask claude

‘decompile the app in this folder to answer further questions on how it works. As an an example first question explain what happens when a user does X’.

I do this with obscure video games where i want to a guide on how some mechanics work. Eg. https://pastes.io/jagged-all-69136 as a result of a session.

It can ruin some games but despite the possibility of hallucinations i find it waaay more reliable than random internet answers.

Works for apps too. Obfuscation doesn’t seem to stop it.