Have a look at Meteor (https://www.meteor.com/ https://www.meteor.com/). - JavaScript is basically a functional programming language, too. - Meteor has Cordov

Have a look at Meteor (https://www.meteor.com/ https://www.meteor.com/). - JavaScript is basically a functional programming language, too. - Meteor has Cordova integration for mobile development. However I never tried out Cordova, so I can't say whether it's good or not. - Meteor is JavaScript, but as others have pointed out, your list of conditions doesn't make sense, so I ignored your fourth point. Or perhaps program in CoffeeScript, TypeScript or a different language which Meteor can compile to JavaScript. - For the last point, there's a lot you could do. Depends on your experience of life. One example is emigrating to a country with low living costs and provide your knowledge from there remotely. This way you can sell for a lower price.