Acorns
Acorns is an investment app that syncs with your cards and monitors your purchases. It then can automatically round up every purchase you make to the nearest dollar and deposit the difference into a savings account. Of course, it’s up to you to decide what you want to put the money towards, whether it be personal investments or educational savings plans for your kids. You can even opt to invest a piece of every one of your paychecks using this app. It costs just $3 a month for a personal account or $5 a month for a family account.