If you have an edu e-mail address you can avoid the fees for 4yrs. I really don't understand investment but I've been giving it a try with since I have a vaild edu email and it seems to save quite a bit. I've been with acorns for almost a year and I have a little bit over 2k built up from deposits and round-ups. I change my deposits quite frequently depending how much I can save. I usually do the daily deposits from anywhere to $5-15/day. Right now have it set to $5 because I'm saving a little bit more in my actual savings account at the moment.
I became very serious about money and finances - quite late in life. I started with Acorns - and I love it. I was one of their earlier members, and in only 3 years, I now have a little over $5,000. Yes, you have get a higher return value elsewhere - but this is extra - on top of regular and consistent investing. The money going into Acorns, I never miss. I contribute automatically $10.00/week - but those round-ups ADD UP! And if I had had Acorns years ago, with the knowledge that I now have - I cannot begin to imagine what a sum that I would have built. I love Acorns!