You can start developing conventional mobile applications like chatting apps, radio streaming apps. video streaming apps, newsstand apps for digital magazine and news apps using RSS feed filters and less complicated apps by using a drag and drop platform as in what you see is what you get WYSIWYG. Platforms like appy pie , appsmoment, app volcano and app zero. You can monetize your apps by placing ad banners from admobs, revmobs and you get to withdraw your money using payoneer. If you're interested in opening a business account on appsmoment which gives you unlimited access to build different apps you can drop your mail for more info. It cost $15 or N3000 to open the account.