Answer : There are a number of free home design apps available, but there are also some that charge a fee. It all depends on what you're looking for in an app and what features you want it to have.
Some of the more popular free home design apps include Houzz, iDesign, and Home Design 3D. All of these apps let you create floor plans, select furniture, and decor, and even see how your choices will look in real life. They're a great way to get started on your renovation or decorating project.
If you're looking for something with more features, or if you need to design a complex space like a multi-level home, then you might want to consider paying for an application.