I worked for a short time at Bodeswell, which was a startup working on a financial planning application that helped users create financial plans for their lives.
Bodeswell let users link their accounts, and then displayed a timeline of their net worth over the span of their lifetime. They could then add life events to their timeline, such as having children, saving for retirement, buying a house, etc. Bodeswell would then provide information and calculations for how much one would need to save to meet their goals.
I worked on the Kotlin backend for a month until Bodeswell was acquired by American Express.