What if you did not like the traditional Shabbos foods or Zemiroth. What if your shabbos entailed the kids fighting the whole time for the right to sit next to Mommy and throwing food around and screamed the whole time.”
Good question. And this type of shtuss app would help – HOW? Could the parent just take him/herself away and ignore the kids while using this app? They might as well read a book or go for a walk, both of which at least are unquestionably muttar on Shabbos.
Trying to excite someone about Shabbos is a whole different idea from giving that person something that will further take away the spirit and spirituality of Shabbos. I think that there has to be a much better solution than this one, which is not a solution for anyone, much less disenfranchised Yidden.