That is more than enough to launch their alpha and beta app.
If they are not greedy, they can optimize such funds and bring something to the table.
600k is not a small money to begin with. Some projects start without collecting funds from the users.
I also think so, and it is for this reason that they promise to show the results of work already in Q1 2019. so that incredulous users like you and I could buy tokens after seeing the alpha version.