Investing app that uses RoundUp feature to automatically deposit?

[Chris M.]

Hey guys, for a while I was using the website BoostUp to save money. One of the things I really liked about that website is that I could set up a "Round Up" feature where my purchases using a credit card would automatically be rounded up to the next dollar and that round up amount would be deposited into this savings account. Unfortunately, BoostUp is also kind of wonky and they made it very difficult to withdraw my own money, so I stopped using their service.

I'm wondering if there's an app/website that you guys can recommend that does the Round Up feature like this with credit card/debit card purchases and automatically deposits them into an account of my choice? I thought I heard the Acorns app does this... but wondering if you guys have any experience with this/recommendations. For me, I found this an incredibly easy way for me to save money because it required no effort on my part... with every one of my credit card purchases a small amount would be automatically deducted to my savings. 

Really appreciate any insights on this!