Macphun has announced a limited-time offer on its FX Photo Studio app. Available for $0.99 until 28th November, FX Photo Studio is an iOS app that features over 194 effects and filters, a colour splash tool, selective masking, and other image adjustments. Users of FX Photo Studio can also enter their creations in the first International iPhoneography Show - one of the biggest iPhone photography events of the year, taking place in Soho Gallery for Digital Art in New York, between December 16th and 23rd.