Hi Camille,
There is plenty of work on the gnucash project. However I'll focus on your
eventual goal of
basing your iOS app on the gnucash core.
I think your first step would be to familiarize yourself with the gnucash build
system. We have
wiki pages describing how to build gnucash on linux,
In a recnt discussion with
(http://gnucash.1415818.n4.nabble.com/template/NamlServlet.jtp?macro=user_nodes&user=378901)
around capital gains and realized and unrealized gains, I had occasion to
acquaint myself with trading accounts. The current version of Ch12 only
deals with the manual calculation