If you are using Digit you need to be aware that they have added a $2.99 monthly fee. I never used Digit myself, since I like the similar service Qapital instead. Both apps did roughly the same thing. They automatically stashed small amounts from your checking into their savings accounts. I don’t really see the appeal of these apps, but lots of people like them. I find it easier and simpler to just save money in big chunks rather than having a bunch of tiny transactions. It does seem that these services help people who aren’t good at saving money get some money in their savings account.
The main appeal of these apps for me ( and I suspect a lot of other personal finance bloggers) is that they have referral links that pay you when you someone signs up with your link. If you sign up through my referral link we will both get $5. It isn’t much, but every little bit helps and it should only take about 10 minutes to set up your account. If you have any questions, please feel free to ask.