I tried this a few years ago actually. Search for Appcubator. The issue is the market is bimodal and there's not really any room for a middle ground. Developer

I tried this a few years ago actually. Search for Appcubator. The issue is the market is bimodal and there's not really any room for a middle ground. Developers prefer to have full control over their architecture and they have varied and evolving opinions. Non-technical folks tend to churn once they reach the "download your code" step. Ultimately I think the best software will be created by the developers, who don't need a tool like this.