All online. Easy to use app. Great!
I've been a client of N26 for over 2 years now. I decided to open an account with them as no physical presence is needed, all online and in several languages. 
I cannot say anything negative about this online bank.
The app is clear and easy to navigate. Has always been up and running and is user friendly.
For Germany, be aware the debit card you get is not a EC card, but a regular debit card, which might not be accepted in some smaller businesses. But I have a second bank I use for that. N24 remains my primary.
As it's all online, you cannot deposit checks, which is the reason I opened a second bank account. 
Great bank, no problems so far, and I've never had to contact customer support.