Ricoh has liberated Software Development Kits, or SDKs, giving programmers the opportunity to write apps that control Pentax cameras.
The apps will be handy both on computers and iOS/Android platforms. User-developed apps will soon be joining the existing software available from Ricoh equal Image Sync, Image Transmitter and the Lightroom plugin.
The SDK covers all Pentax camera models released in the last 2 years, as well as the 645Z. So that's the K-1 Chip II, K-1, KP, and K-70.
If you're interested in writing some software, you can get the SDK from Ricoh's developer page.