Worst customer service I’ve experienced
The app itself is not bad, and it’s a good bank to start off with when moving to Germany initially and you are looking for an online bank.

It took me a long time to find out how terrible the customer service is, because I never needed them the first couple of years. 

After three months of messaging (because they do not have a contact number, nor a live chat, in this day and age), they have continuously misread my request, asked me to provide certain information only to then tell me the information is not sufficient, tell me to provide certain documents that are completely irrelevant to my case (a name change confirmation when I have never had a name change).

All of this happened in a way where they would reply to my messages once per 1-2 weeks, and I would then reply on the same day (usually within the hour), and they would then let me wait again some weeks, etc.

All in all, perfectly fine bank if you don’t need any help from customer service. I dearly hope they will start seeing soon how much of a roadblock their customer service team is creating though, so they can start becoming the competent modern bank they otherwise are.