While it’s true that development might go quicker, a lot of the time the overhead of managing the open source workflow negates the wins. And sometimes the problem just takes a while to think about, no amount of throwing devs at it will help (this is the case for what I’ve been doing in the past several months. Actual’s architecture for local data + syncing is unique and required careful thought). Open source works best for libraries in my experience. I think the best thing I could do is open-source parts of the apps as libraries, which would share the work and allow people to contribute back, while still allowing Actual itself to be carefully integrated.