I started with stash investing after reading a penny hoarder article on it and choosing between that one and other robo investing apps. I have really liked investing with Stash. They changed their fees to $1/month for the basic amount, no matter how much money you have in the account. (It was more in the past if you had more then$5000 in your account.)
Stash now has a nice promotion. Sign in to their "party" every day at 4pm est to get a small fractional share of a different stock everyday. Today it is a small amount of netflix. My share of each stock had only been about $1 a day, and will probably be less for netflix, but if you are already interested or already apart of stash, any penny is great!
Not sure if I could give out my stash referral code in this discussion, but feel free to contact me for the referral code. Or maybe penny hoarder still has a referral code through their site, and I support supporting them!