seriously uncool. How do you want to assume that parenting did not work out well for me. Just because you had a socialist border-line austiran nazi upbringing, which was most probably loveless (just like Hitler) does not mean that others shared the same compationetless childhood you did. So I'll stay professional here and will stop insutling upbringing and I advise you too keep this professional, you opensource nazi loving, schwarzenegger horny aryan.
So back to the topic. While he could opensource the magic in the background. The app itself can remain propertiary. It is his right to choose so. He can just needs to write a paper on how he developed it and which algorithms.