Say you’re invited to dine at Buckingham Palace with monarchs from around the world. Would you show up wearing a bathrobe? Of course not. It’s unthinkable, right? Yet, app creators do it all the time. After all their hard work, at last about to go live on the App Store and Google Play and join the company of app royalty, they hurry their app into terrycloth screenshots and expect to be fed like a king.

Not gonna happen.

Choosing to give your app anything less than outstanding screenshots on your app pages is a big mistake. This shouldn’t come as a surprise to anyone. Understandably, plenty of Founders press forward thinking I can’t pay a developer any more to design screenshots or every time there’s a new release and I need to make updates,...