Hi, I've written a character sheet that depends heavily on sheet workers scripts, it works just fine on a standard browser (even with a non paricularly powerful pc) but it's unusable on tablets or phones, changing the values triggers a very slow response, my phone and the ipads I used for the tests should definetly have the processing power to handle the math. The character sheet is The Strange (multiple recursion) which is available on the production site. ADC