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 Digit: Automated Savings, an automated savings tool with text-enabled communication. The app connects to your checking account, which allows Digit to analyze your income and spending habits to find small amounts to save for you. Those amounts increase (or decrease) based on your lifestyle. And you can easily, and with NO FEE, withdraw money from the Digit savings account via text whenever needed. Since its launch, Digit has saved an overall $20 million for users.Ethan has had over a decade of experience in finance, and his last company, Flowtown, was acquired by Demandforce (Intuit) in 2011. He says that he as been “obsessed with personal finance” 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’t compete with Digit.How the app determines how much to save on your behalf. What if your income's sporadic?The sore lesson Ethan learned after investing his bar mitzvah money.