You know how when you need something, it seems to be everywhere? I’m going to be working on an app and so everywhere I look I am reminded of this.

Sometimes it’s useful, as in references on various podcasts. Sometimes it isn’t, as in Community season 5, episode 8, “App Development and Condiments”.

Look out for it.

And then there are times when it’s handy. As in tonight, when there’s a Mac app called Prototypr that has briefly gone free. Usually retailing for £6.99, it’s for building a kind of demo version of your app idea: showing the screens and what it will look like without it actually being able to do anything.

It means you can try things quicker and get to the design you need sooner.

Have a look at Prototypr. I’ve not used it, but while we were talking, I was downloading it.