I agree and disagree. They probably don't want you to focus too much on the actual design during early prototyping. But they could have made it a bit more polis

I agree and disagree. They probably don't want you to focus too much on the actual design during early prototyping. But they could have made it a bit more polished and still kept it bare. Another benefit of this app is you can easily share your work (I know you can scan your sketches). But a negative is you can't really interact with it or make comments (Balsamiq).