Hipster, which started out as a location-based Q&A service, has pivoted to another popular category -- location-based photo-sharing -- with its iOS app.

"It's Hipster goal to create a real-time, visual public record of the worlds’ locations, so you'll see features and product additions over the next few months that support that goal," CEO Doug Ludlow tells LAUNCH via email. "Specifically, adding social context / information to the locations around you will be the core of our next efforts. (And, we'll be adding Halloween themed postcards soon, but those are just for fun :) )."

In the first 18 hours, 2.5K users downloaded the app, Doug says. The app, which is powered by Google Maps, is compatible with iPhone, iPod touch and the iPad. The Android app is planned for early 2012.

Doug founded San Francisco-based Hipster in 2010 with Ethan Czahor and Steffen Hoffman. Competitors include Foursquare, Instagram, MoPho.to and Loopt.

The company has raised $1M to date. Investors include Lightbank, Google Ventures and 500 Startups.

SCREEN SHOTS

Click "Send" to take and share a photo. Hipster recommends that you take landscape photos for the best quality.

Click Edit Location if necessary or Edit Theme to change the photo filter.

Select or add a new location.

Choose from 10 different themes that feature various font sizes, styles and colors.

After you take the photo, you can note what you're doing and who you're with. Share options limited to Facebook and Twitter. Click "Send Postcard" to publish.

The Friends tab shows you your recent postcards, as well as those from friends.

The Nearby tab lets you see photos in your general vicinity.

The More tab lets you access your profile, settings, connections and also search for people, places or tags.

CONTACTS & LINKS

Hipster
Twiter: @Hipster
Website: www.hipster.com

Doug Ludlow, CEO
Twitter: @dougludlow
Google+: https://plus.google.com/117697279749263493683/posts

Ethan Czahor, Co-founder
Twitter: @ethanczahor
LinkedIn: http://www.linkedin.com/in/ethanczahor
Google+: https://plus.google.com/106571285146383458320/posts

Steffen Hoffman, Co-founder and Creative Director
LinkedIn: http://www.linkedin.com/pub/steffen-hoffman/6/722/668
Twitter: @sethlynne