You won’t believe what we found, and it’s FREE at the moment of writing. An iOS app that has crazy loads of mathematical and physics formula references, and beautiful periodic table reference.
It’s really cool. And it even supports Apple Watch.
Go try it out here https://appsto.re/my/YoaP5.i, you have nothing to lose! Well, even if you have to pay for it, it’s only USD0.99. 😉