Can I use 现代汉语词典 outside of the paper dictionary?
You can buy it as an in-app purchase in the Pleco app. It costs 19.99 USD at the moment. For Android devices and also for iPhone /iPad. Reference: http://www.pleco.com/products/pleco-for-iphone-ipad/pricing-bundles/ in the section "Individual Add-ons /dictionaries ". If you install Pleco for free with just the 现代汉语词典 as an extra it should just cost 19.99 USD.