How do you manage time while developing your app for multiple platforms?
If you are developing your app for multiple platforms then how do you divide development time between each platform?
You'll get better answers if you tell us more details. What platforms? You don't even specify desktop or mobile. What kind of product? B2B or consumer? Have you measured usage per platform? Is support of the platform critical for sales, or is it really something done on principle? What toolkit do you use? Can some platforms be served with a light version of the product?