The only criticism I have of the app is actually a good thing: The city has done such a good job of installing bike racks all over the place, that I rarely find myself searching for one (though next time I do, I’ll totally use this app). For example, look at the screenshot posted here. Bike parking is everywhere (though if this app could show which racks were vacant, that would be crazy cool and probably cost prohibitive).
However, if you’re in Rainier Beach, the app might come in handy more often:
Here’s a video explaining how the app works:
Here’s an info graphic: