I spent 5 days letting Claude debug parts of my mobile app, and the experience was way more mixed than I expected.

It handled repetitive fixes and smaller bugs surprisingly well. But once the app became more complex with state management, interconnected logic, and multi-file debugging, things started breaking down fast.

At some points, the fixes actually created deeper bugs elsewhere in the app. Then, I took help from an app development company.

So, for future, I don't face any problem, can anyone tell me,

Which AI coding tool has worked best for you so far?