I am a startup founder based in India. Recently the iOS developer we were working with left the company in some what acrimonious circumstances. Post his departure from the company, he has made it clear that he will try to cause damage to our iOS app to the extent that it starts to crash. Even though we have removed his access, as a non tech founder, I am not sure what ways he can edit or hamper our iOS app and what measures we can take to protect the same. Please advise us with steps for us to secure our code and ensure no one can edit the same or hamper our iOS app on the app store.
Thank you