Knowing how much to put aside for the future, emergencies or anything else for that matter can be challenging. How much can you afford to save? How much do you need to reach your goal? What if there was only an app that could figure all of that for you and actually save on your behalf?Introducing: Ethan Bloch, the founder and CEO of\xa0Digit: Automated Savings, an automated savings tool with text-enabled communication. The app connects to your\xa0checking account, which allows Digit to analyze your\xa0income and spending habits to find small amounts to save for you. Those amounts increase (or decrease) based on your\xa0lifestyle. And you\xa0can easily, and with NO FEE, withdraw money from the Digit savings account via text whenever needed.\xa0Since its launch, Digit has saved an overall\xa0$20 million for users.Ethan has had over a decade of experience in finance, and his last company, Flowtown, was acquired by\xa0Demandforce\xa0(Intuit) in 2011. He says that he as been \u201cobsessed with personal finance\u201d since he was 13, and has spent his career doing just that. With Digit he provides a solution for modern problems in personal finance.Three takeaways from our interview:Why Ethan says the big banks can\u2019t compete with Digit.How the app determines how much to save on your behalf. What if your income's sporadic?The sore lesson Ethan\xa0learned after investing his bar mitzvah money.