Previewing your design in situ lets you test tap sizes, text sizes, colour, contrast and ergonomics, all at a time where changes can be easily made - during the design process. It closes the loop, meaning you can iterate faster to a better final design.
Skala Preview sends lossless, colour accurate image previews to any iOS device. Previews are pixel perfect. Colours are identical to how the final app or website will look on the