For Halloween weekend only, IncrediBooth is letting users download its app for free to check out its improved sharing and take advantage of its three new booths, like the Haus O'Haunt.

The app, which features Hipstamatic's "optical brilliance," features a new "All Photo Strips" viewing mode, UI improvements, support for iOS5 and the ability to multi-task while your photos upload. Now, users can share full strips or just individual photos to Facebook, Twitter or via email.

While the app is free -- usually costs $0.99 -- the additional booths cost $0.99 each, but LAUNCH editors think it's worth it. They're a lot of fun! Other new themes include Isoblak, which makes your photos look monochrome, and Crown Colour, which adds jewel tones. Click here to download IncrediBooth for free.

San Francisco-based Synthetic, founded in 2006 by Lucas Buick, is the maker of IncrediBooth, Hipstamatic, HipstaPrints and Swankolab. In 2009, Synthetic shifted from being a design and web consultancy company to mobile software.

SCREEN SHOTS

Markup setting in Haus O'Haunt.

Zoomba setting in Haus O'Haunt.

Salvador 84 setting in Haus O'Haunt.

Salvador 84 photo strip.

Isoblak theme.

CONTACTS & LINKS

Lucas Buick, CEO
Twitter: @lucasbuick
LinkedIn: http://www.linkedin.com/in/lucasbuick
Website: http://lucasbuick.com/

LAUNCH Blog