Sony's new Sky HDR app mimics the effect of a graduated ND filter

Sony has released Sky HDR, a new PlayMemories app for capturing landscape scenes that have wide ranging levels of brightness. Sky HDR aims to replace a graduated ND filter, with various adjustment 'themes' along with control over exposure and white balance of sky and landscape areas separately.
Sky HDR works by capturing two different exposures of the same scene and combing them into a single image. The interface, demonstrated in the video above, is tailored to landscape photography, and resulting photos can be saved as JPEG or Raw files. The app is available for $10, and is compatible with the following cameras:

• Sony NEX-5R
• Sony NEX-6
• Sony NEX-5T
• Sony a7
• Sony a7R
• Sony a6000
• Sony Cyber-shot DSC-RX100 III 
• Sony a7S
• Sony a5100
• Sony a7 II
• Sony Cyber-shot DSC-RX100 IV
• Sony Cyber-shot DSC-RX10 II
• Sony a7R II
• Sony a7S II
• Sony Cyber-shot DSC-RX1R II.

Sky HDR can be purchased from Sony's PlayMemories website.