I use chipTAN for authentication in banking-context because I think it's the better second factor.
Till now I use the bank´s portal via a browser on my PC. In future I want to use the mobile application provided by the bank.
Now is the question is the mobile application more insecure than the bank's portal?
If this isn´t the case, is there a difference between use the bank's portal via a browser on my PC or via a browser on my mobile phone?