I would only trust an application like this with "real" money if A) it was provided directly by my broker/dealer/exchange or B) it was open source. Since A is n

I would only trust an application like this with "real" money if A) it was provided directly by my broker/dealer/exchange or B) it was open source. Since A is not an option I'd suggest open-sourcing the code. A distant second problem is it should be cross-platform. That's just table stakes in this day and age.