Design of Web app for Google Playstore

Hi, I am designing a web app for one of my websites. The website provides Online Calculators for different problems. There are two basic solutions which I can opt:

  • Either to directly embed website in the app
  • Or to create separate calculators in app

The basic design of calculators look like:

web link for above: http://www.electricalcalculators.org I also want to code the formulas (in case of technique 2) in JS like this:

Please give the easy solution for my problem as well the tutorial from where I could start the development for Unity. PS: I know basics of JS and C++

easiest solution

  • hire someone to do the app (it sounds like quite clearly defined job, so should be easy job for some freelancer/company)

not so easy

if your website is already super nice & responsive for mobiles,
people might as well use normal browser to access it faster (than starting unity app), and attach the page in home view to see it in full screen…

but proper separate app could look nicer and have new features, that web doesnt have… like 3D previews? drawing those values in some animated way… (although this would be possible in three.js easily too)