I met up with Joel a while ago and we struck up a conversation about estimating construction costs because my father-in-law had been a contractor. He had what looked like a great app for estimating these costs, and it's now available for iPhone, iPad and Mac.

In this Origin Stories I talk to Joel about why he created this app, which is pretty much what you'd expect -- he had a problem of lousy tools for on-site estimating and he solved it using a clever app.

This article was originally published on Tuaw.
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