CityHiker

Explore your city.

Find steep hills and explore them

CityHiker

For anyone who loves exploring their city and getting some exercise.

Coming soon to the App Store

Announcing Open Beta Program! #CityHikerBeta

September 10, 2017

After many months of refining the user experience, the app is finally ready for open beta. I’ve had to make some hard decisions during this time. There are many interesting problems to solve in this space, and I want so much to publish the path finding features. The unfortunate reality of small teams is limited … More Announcing Open Beta Program! #CityHikerBeta

Pathfinding

October 14, 2016

In my last post, I described in detail the challenges of optimizing geospatial data APIs. From the beginning, one of the features I wanted to support was the idea of pathfinding. If you want to avoid a hill, one way to do that is with a top-down view of steep roads around you. This gives … More Pathfinding

Map Search Optimization

September 30, 2016

CityHiker uses a TON of data. To give some perspective, the city of San Francisco contains a little over 50k street intersections. If we assume they are on an even square grid (they’re not), that means roughly 225 x 225. According to Wolfram, a grid graph Gmn has 2*mn-m-n edges. For a square grid, m = … More Map Search Optimization