Tiggzi lets you build apps for the mobile web, as well as native iOS and Android apps. With Tiggzi, you could build a basic app without any programming knowledge, but the service is really meant for more advanced users who can use it to design complex apps that can hook into virtually any on the net. The problem with most of these is that you quickly reach their limits once you want to build more complex apps., a new cloud-based service by software engineering company, wants to provide a bridge between the world of drag-and-drop app builders and more complex tools. There are plenty of services out there that will let you build simple mobile apps without the need to know how to program.