This varies from user to user. Digit takes into account each user's unique financial situation for the day. It learns things like pay days, rent, upcoming bills, spending patterns, and average balance to determine how often to save and how much to safely set aside.
For your Rainy Day Fund, most folks see 2-3 savings transfers per week on average. The savings amounts on average tend to be between $10-30. Please keep in mind that both the frequency and amounts can vary depending on the day/user and their unique financial situation. The range is from $0.05 to $150 in the most rare cases.
If you have a Goal set up to save for a Goal or Bill through Digit, the amounts will be more specifically tailored towards helping you reach that amount rather than your Rainy Day Fund.