As I replied down below (https://news.ycombinator.com/item?id=26972907), I don't have any concrete plans to open-source it at the moment. However, I know this is a pretty big sticking point for some people, so I have been working through some plans on how we could do it.

In particular (but again, no promises), I want to start by open-sourcing the custom Redux middleware that we use to handle data encryption. I feel like that's one of the most important parts to open-source (ya know, since it's the foundation of uFincs' security), but it's a matter of getting everything in order.