Terrible customer service
The positives are that the app looks good and does the job. Revolut and Monzo are a bit sleeker but N26 is ok. 

The negatives are that the customer service is terrible. You have to wait ages to get hold of a person after dealing with a chatbot and then you're on hold for usually 30 minutes. I have had the account for a few months for using abroad and the company has now decided to terminate my account. No reason has been given for its termination despite multiple questions from me. They fob it off saying "customer services has no other information on why it's been closed."

So there you have it - open an account, they close it and don't tell you why. So all in all a pretty shocking experience. I would stick to the other fintechs out there.