This'll work fine for very simple apps, ones that only require standardized functionality. But then, with an app like that, do you really need to develop a custom one for any reason other than branding/appearance? And it'll work for disposable apps, ones that do the current job but don't need to be maintained or enhanced down the road. That's been true forever, it's why spreadsheets and word processors had macro languages so secretaries and accountants could do simple operations and calculations without needing to have the programming team get involved. But the moment you start dealing with an app with complex functionality that has to be changed, enhanced and extended over time, that's when you'll discover that you need software engineers. It's the same reason anybody who can grab a hammer and saw can cobble together a sawhorse that'll work for one job, but you need someone who understands architecture and construction to build a house that's expected to last for decades.