Best stock market apps for smartphones

[Jassem A.]

Found a smartphone app yesterday called that lets you invest in different stocks and currencies. They say it's 100% free but I discovered you pay a small percentage above the share price. It seems really neat and I bought 86 shares of HEXO stock just to see what happens with it. By signing up they give you one free stock worth between $5 and $200.  The one I was given was Sirius XM stock currently worth 5.85.  If you refer friends then they give you more free stocks. I don't have a big social network so I figured I would post it here since I am sure plenty of you all dabble with stocks.  This is the only smartphone app I have tried for traditional stock market investing but it seems to be a popular one.  One thing I see that is missing is penny stocks which I imagine are more volatile but may provide a better return and also option trading which seems to complicated to me anyway.