Am I misunderstanding the product, or does it look like it solves not that much of a big problem? So, this device let's you track how long you've been running on a particular pair of shoes and when they would wear out, so you can have them replaced on time.

How different is this from installing an app on your smartphone and tracking the miles walked (on that particular pair of shoes)?

Could someone please clarify? Given the fact that this is a product coming from a big-shot (or an ex-bigshot?) at Microsoft, I am somewhat disappointed (I was expecting something radically different)