My portfolio can be seen by everyone via this app:
Getquin*

Benefits for you:

• real-time 

• 100% transparency

• no registration needed

• free to download

Within Germany, France, Spain and Italy I can highy recommend the following Broker:
TradeRepublic*

Benefits for you:

• monthly DCA is for free 

• 1€ fee for regular transactions

• free to download

• get a free stock valued up to 200€ through registration