TriggerTrap is a fantastic tool for all kinds of shutter release remote control - and Pentax is supported.
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Triggertrap - Smartphone powered camera remotes (I even built and documented a way to use the TriggerTrap for Kr and other cameras without a wired release port in Forum's DYI section)
TriggerTrap uses a dongle connected through the audio port on an iOS or Android device to control shutter release.
Foolography is currently holding a Kickstarter fund drive to create a Bluetooth enabled dSLR remote control dongle, the Unleashed - at a glance it looks like many of the same things you can do with a Pentax FLUcard and Wi-Fi Direct.
But get this: the Unleased can also use your smartphone's GPS to geotag images - Click>
UNLEASHED - Full Control Over Your DSLR From Your Smartphone by foolography GmbH ? Kickstarter
TriggerTrap and Foolography are pledging to support each other's app on their respective devices. There is only one catch... initially the Unleashed will only work for newer Canikon cameras. However, until the end of September for a 10€ (about US$11) pledge, you get to vote on what cameras the Unleashed should also support.