If you have a CreativeCloud membership, you only need to install the software you want on your Mac, then log in using your CC credentials. I've used CC on my Mac and Surface independently with the same account.  Saving to my CC files makes it really easy to move back and forth between the two machines. ... View more

You can save it to your camera roll as a movie ... View more

If your max value amount is set, then creating the slider to drive the percentage of that number requires some simple math. How accurate you want your percentage slider to be would require a little modification to that math. This example lets you animate a percentage of "2" (maximum value) frequency in the wiggle, but lets the amplitude stay at "5": mv=2; //maximum value perc= (effect("Slider Control")("Slider")/100);  // makes a percentage value from the slider using 0-100 wiggle(mv*perc,5) explanation: There are many ways to do this. The slider is limitless, so you might want to set some ADDITIONAL rules in your expression, but to keep this simple: You have to multiply your maximum value by your "perc".  However, we want to turn the "perc" number into a fraction.  An easy way is to divide the slider amount by 100.  Multiply your max value with the result of your (slider/100) and you have your percentage. (*You could use fractional numbers to animate instead of this, but the slider is easier to control this way.) ... View more