Aircraft Performance Group (APG) caters to the jet market with, among other services, the iPreflight iPad app for iOS. The draw is the app's ability to crunch precise runway performance data based on a variety of customizable variables, including aircraft loading. Moreover, APG says its app meets regulatory requirements for engine-out performance calculations.
This is a companion discussion topic for the original entry at https://www.avweb.com/avionics/flight-planning-for-jets-ipreflight-genesis