I really like Aerofly FS 2 for my iPad. I was really surprised when I saw, that IPACS is a Germany developer- even from TÜBINGEN (next to me).
Great so far Every Airport is soooo great and all the details!
But as usual for German products they are doing a cruel marketing. I watched your YouTube Chanel and you around 2,5 million views ! That is a lot. But your last video is over 2 years old! Why you are not able to release some more videos every month? I watched your Facebook Account which is not that interesting. I know you have a lot of things to do but without a better community working you won't get far.
Also let the community do your work. There are so many people out there who are using the app every day. They could do a lot of stuff for free. Or get more activities on Youtube. Get against all the terrible store ratings with your dev comment.
I watched a lot of German developers with great products which failed in the end. Branding and marketing are sometimes more important than bug fixing. Also you have to release more plans for your money income or get the monthly payment.
Doing all that stuff in Germany is a hard way. It is different and very difficult so I hope you have the power to get stronger against your opponents.
p.s. I am sure that posting will end up in the trash But maybe some dev will read it.