Well done on launching, this looks interesting. I just want to add a very subjective caveat, which really has nothing to do with your achievement. Personally, I

Well done on launching, this looks interesting. I just want to add a very subjective caveat, which really has nothing to do with your achievement. Personally, I find my ability to absorb information is contingent upon my staying in a single realm for either a concentrated or a long period of time. This sounds self-explanatory, but I really mean that I can't grasp even fairly simple concepts unless I've encountered them and read about them in more than one or two books. It's as if I require a kind of mental seed-bed for even the crudest thought to grow. So to read a book about mathematics, followed by a book about agriculture, etc etc, is bound to leave me bewildered. Again, this is just me, I'm sure your app will be useful and diverting for many people. (Parenthetically, it reminds me of the advice Charles Olson wrote to a younger writer: "Best thing to do is to dig one thing or place or man until you yourself know abt that than is possible to any other man. It doesn’t matter whether it’s Barbed Wire or Pemmican or Paterson or Iowa. But exhaust it. Saturate it. Beat it. And then U KNOW everything else very fast: one saturation job (it might take 14 years)".)