Could anybody recommend me how to save the coins savely, I actually whould like to store different once. Since I also lost over 400 Dark/dashcoins, since I left them on an exchange....
Coinomi is HD wallet-app only for Android and iOS devices. It has been around since 2014 and no wallet has ever been hacked or otherwise compromised, and no user has ever lost money with it due to a wallet's issue as far as I know.